What is the shoal of sardines? What other fish can make shoals?
Answers
The shoals are often more than 7 km long, 1.5 km wide and 30 metres deep and are clearly visible from spotter planes or from the surface. Sardines group together when they are threatened. This instinctual behaviour is a defence mechanism, as lone individuals are more likely to be eaten than large groups.
The shoaling habit includes all the popular, common fish that belong to the Characin family (tetras), Cyprinidae family (barbs and danios) and Melanotaeniidae family (rainbow fish). There are even some species of catfish and cichlids that shoal.
Why do fish swim in shoals?Many kinds of fish prefer to swim together in groups called shoals. ... Shoaling can help fish because there are more eyes for spotting danger from predators or for finding food. Predators also find it more difficult to target a single victim in a big, moving group.
Related Questions
organisms interact in the flow of energy in an ecosystem. carnivores and omnivores are classified as consumers. which two organisms are also classified as consumers? responses bacteria and fungi bacteria and fungi fungi and scavengers fungi and scavengers parasites and herbivores parasites and herbivores decomposers and herbivores
Answers
They must consume other species or acquire energy from them in some other way. Consumers are species that acquire their energy from other organisms. All creatures are consumers who devour other organisms. Fungi, as well as many protists and bacteria, are consumers.
What exactly are carnivores?Carnivores are creatures that consume animal flesh or meat. Carnivorous animals that hunt other creatures for food include wolves, lions, and sharks.
What exactly are omnivores?Omnivores are creatures that survive by eating both vegetables and meat. Omnivorous animals include dogs and cats. We are omnivores because we eat both animal meat and plants.
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For which of the following would you recommend the use of Felsenstein's method of independent contrasts? a. a comparison among bird species to determine if bird beak shape and preening behavior are related to differences in external parasite loads among the species b. I would recommend independent contrasts for all of the above c. an experimental test to determine if altered beak shape results in differences in parasite loads within a single population of a bird species d. an observational study to determine if the amount of preening by individual birds of a single species is correlated with the number of external parasites carried by those individuals
Answers
Felsenstein's method of independent contrasts is recommended for option (a) - a comparison among bird species to determine if bird beak shape and preening behavior are related to differences in external parasite loads among the species.
Felsenstein's method of independent contrasts is a statistical technique used to account for the evolutionary relationships among species when studying trait correlations. It allows researchers to control for the effects of common ancestry, which can confound the analysis when comparing traits across species.
In option (a), the goal is to investigate the relationship between bird beak shape, preening behavior, and external parasite loads among different bird species. Since the species being compared are likely to have different evolutionary histories, using independent contrasts would be appropriate to control for phylogenetic relationships and accurately assess the correlation between traits.
This method helps to account for shared ancestry and provides a more reliable analysis of the relationship between beak shape, preening behavior, and parasite loads across bird species.
For options (c) and (d), where the focus is on within-population studies of a single species, Felsenstein's method of independent contrasts may not be necessary. These situations involve studying individuals within a single population or species, where the effects of common ancestry are minimal compared to inter-species comparisons.
In such cases, simpler statistical methods, such as correlation analysis or experimental designs, can be employed to assess the relationships between variables without the need for independent contrasts.
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Why does temperature change always move from regions of hot to regions of cold?
Answers
When two bodies with different temperatures come into thermal contact, they exchange heat energy until they attain thermal equilibrium, at which point the cold body warms up and the hot body cools down.
What is thermal conduction?The process by which heat is transmitted from an object's hotter end to its colder end is known as conduction.
The term "thermal conductivity" refers to an object's capacity to transfer heat, and it is represented by the letter k. Heat naturally moves in the direction of a temperature gradient.
Thermal conduction is the term used to describe the flow of energy (heat) caused by temperature variations between nearby body parts.
The kinetic energy of the atoms in hot bodies is higher than that of the atoms in cold bodies.
The higher kinetic energy atoms attempt to move and collide with the lower kinetic energy atoms in order to preserve thermal equilibrium. As a result, heat can be transferred from a hot body to a cold body.
Thus, temperature change always move from regions of hot to regions of cold.
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which polymers are composed of amino acids? view available hint(s)for part a which polymers are composed of amino acids? proteins monomers carbohydrates nucleic acids
Answers
The polymers that are composed of amino acids are proteins, while nucleic acids are composed of nucleotides and carbohydrates are composed of monosaccharides.
What are proteins?Proteins can be considered biopolymers because they are composed of linear sequences of amino acids such as for example histidine, glutamic acid, arginine, etc.
In a protein, these building blocks (amino acids) are linked through peptide bonds to form polypeptide chains.
Biomolecules such as proteins, nucleic acids and carbohydrates are considered biological polymers because they are composed of linked subunits in linear order, which is required to form macromolecular structures.
In conclusion, the polymers that are composed of amino acids are proteins, while nucleic acids are composed of nucleotides and carbohydrates are composed of monosaccharides.
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By manipulating a single gene, scientists have been able to control sexual orientation inA. humans.B. chimpanzees.C. fruit flies.D. all of these organisms.
Answers
C. fruit flies. Scientists have successfully manipulated a single gene to control intimate orientation in fruit flies.
This groundbreaking research involved manipulating the fruit flies' version of the "fruitless" gene, which is involved in regulating courtship behavior and intimate orientation. By modifying this gene, scientists were able to influence the intimate preferences of the fruit flies, causing them to exhibit same-gender attraction. However, it is important to note that the manipulation of a single gene in fruit flies does not imply that the same can be done in humans or other organisms. intimate orientation in humans is a complex trait influenced by a combination of genetic, hormonal, environmental, and social factors. While genetic factors may play a role in human intimate orientation, it is not determined by a single gene and cannot be controlled or altered in the same manner as demonstrated in fruit flies.
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Which of the following is a good example of quaternary protein structure? As spider silk is produced, beta-strands form to give it great strength and elasticity Four globular subunits join together to form functional hemoglobin. Antibodies are globular proteins that fold on themselves because of hydrogen bonding. The fibrillar collagen molecules often have repeating amino acid sequences that include many glycines and prolines.
Answers
The correct example of quaternary protein structure is four globular subunits joining together to form functional hemoglobin, option (d) is correct.
Hemoglobin, a protein present in red blood cells, plays a crucial role in transporting oxygen throughout the body. Its structure comprises four subunits, each housing a heme group that facilitates oxygen binding. These subunits come together through various interactions, including hydrophobic interactions, hydrogen bonding, and sometimes disulfide bonds, to form a functional hemoglobin molecule.
This quaternary structure is crucial for hemoglobin's ability to efficiently transport oxygen. Each subunit contributes to the overall structure and function of the hemoglobin molecule, and any disruption in the quaternary structure can lead to functional abnormalities, such as sickle cell anemia, option (d) is correct.
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The complete question is:
Which of the following is a good example of quaternary protein structure?
a. As spider silk is produced, beta-strands form to give it great strength and elasticity
b. Four globular subunits join together to form functional hemoglobin
c. Antibodies are globular proteins that fold on themselves because of hydrogen bonding.
d. The fibrillar collagen molecules often have repeating amino acid sequences that include many glycines and prolines.
Write out the surface area and volume formulas.
Answers
Surface area = 2(lb + bh + lh) sq. units
Volume = (l x b x h) cubic units
What is surface area?A solid object's surface area is a measurement of the overall area that the object's surface occupies.
What is volume?Volume is the measurement of three dimensional space. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units.
What are formulas?A formula is a fact or a rule written with mathematical symbols. Usually, an equal symbol is used to connect two or more values. Using formula, you can determine the value of a second quantity once you are aware of the value of the first. It facilitates speedy question-solving.
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I need the answer to this question, can someone please help??? The subject is for earth and space science!!!
Answers
Select the MOST COMPLETE
response.
During the 20th century, the once
densely-forested Black Forest in
Germany suffered grave
deforestation as a result of
human-caused
A. coal-mining
B. intense heat
C. extreme rain events
D. acid deposition
Answers
The once-heavily forested Black Forest in Germany experienced severe deforestation during the 20th century as a result of human-caused coal extraction.
What does mining coal entail?
Extraction of coal from the earth is known as coal mining. Since the 1880s, coal has been extensively used to produce electricity due to its high energy content. Coal is a fuel used in the production of cement as well as the extraction of iron from iron ore in the steel and cement industries.
Which three types of coal mining exist?Mountaintop removal (MTR) mining, open-pit mining, and strip mining are the three primary kinds of surface coal mining.
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By inserting the genes of a plant that produces an enzyme or other protein that can be used as medicine into a
bacteria cell's DNA, scientists can produce genetically engineered bacteria that act as factories to produce that
enzyme or protein in greater amounts.
Answers
Answer:
Explanation:
In a typical cloning experiment, a target gene is inserted into a circular piece of DNA called a plasmid. The plasmid is introduced into bacteria via a process called transformation, and bacteria carrying the plasmid are selected using antibiotics.
HELP ASAP!!!
What do you think? Are humans unicellular or multicellular? Are we made of primitive
cells or advanced cells?
Answers
Answer:
We are made of primitive cells
Answer:
multicellular and made of primitive cells i believe
Which of the following best describes parent rock?
crushed gravel added to depleted soil to provide nutrients
the primary stone sheet from which a boulder or stone originated
high-nutrient igneous rock like obsidian, extruded from the earth’s magma
the lowest layer of the soil horizon, containing little or no organic matter
Answers
Who is responsible for applying cui markings and dissemination instructions.
Answers
Answer:
The authorized holder of a document or material is responsible for determining, at the time of creation, whether information in a document or material falls into a CUI category. If so, the authorized holder is responsible for applying CUI markings and dissemination instructions accordingly.
The authorized holder is responsible for applying CUI markings and dissemination instructions.
What is CUI marking?CUI stands for controlled unclassified information. It is information created by the government which has to keep safe by applying laws, government policies, and regulations.
The color of the CUI marking is white. Examples of CUI include legal documents, health documents, blueprints, intellectual property, personally identifiable information, and many other types of data.
The rule is made to make sure that every organization keeps the information safe. There are two types of CUI registry resources and they provide government-approved CUI, and they are the DoD CUI registry and the NARA CUI registry.
Thus, the authorized holder is responsible for applying CUI markings and dissemination instructions.
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Learning Task 5: In your notebook, transform the text below into a non-textual
information source.
Sharks and whales are a classic example of two different animals revealing
similar traits in the same environment. One of the similarities of these two
marine animals is their habitat. They both live in the vast range of depth in
their environment. They also have the same fin structure. They only have a
single tail for propulsion and because they are both large aquatic animals,
they both consume large volume of food, however, sharks hunt for their
food. Whales do not have this hunting tendency. Another difference of
sharks to whales is their class. Whales are mammals while sharks are fish
but they both live in the ocean. Also, whales have bones while sharks only
have cartilages.
Answers
Answer: The similarities between shark and whales are indicative of convergent evolution.
Explanation:
Convergent evolution can be defined as the process in which the organisms are not closely related but they evolve similar traits as a result of living in a similar kind of environment or adapting traits which enable them to perform the same ecological niches.
The similarities between shark and whale is indicative of convergent evolution as the animals are not related to each other phylogenetically but they live in the same environment this they evolve same kind of traits.
The similarities between sharks and whales represent an example of convergent evolution.
Convergent evolution refers to the evolution of similar phenotypic traits in unrelated and/or distantly related species.Convergent evolution creates analogies, i.e., different structures that may have the same function but were not present in the last common ancestor of both species. On the other hand, divergent evolution refers to the development of dissimilar phenotypic traits in closely related species as a result of evolution by natural selection, thereby leading to speciation.In convergent evolution, similar phenotypic features (traits) have evolved independently and repeatedly in each lineage in order to adapt to particular environmental conditions.In conclusion, sharks and whales are an example of convergent evolution because they are distantly related species that exhibit similar phenotypic features in the same environment.
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Two balls , one weighing 5kg and the other weighing 1kg , are both traveling at the same speed 3m/s
A. Define kinetic energy and explain why a ball rolling has kinetic energy.
B. Which ball has more kinetic energy ? Why?
Answers
B) the 5kg ball has more kinetic energy because it has a greater mass and is traveling at the same speed so it has more kinetic energy.
Which of the following statements is true about naturalistic observation?
It is the same process as objective introspection.
It recreates natural conditions in the laboratory to make an experiment more valid.
It involves observing behavior in its natural context.
It involves observing behavior in the lab without taking formal notes.
It involves observing behavior in the lab without using technological equipment to measure the experimental findings.
Answers
Answer:
"observing" (and any subsequent words) was ignored because we limit queries to 32 words.
The true statement about naturalistic observation is C. It involves observing behavior in its natural context.
Naturalistic observation is a research tool in which the researcher observes a subject in her natural habitat without any manipulation by the observer.
A characteristic of naturalistic observation is that researchers carefully avoid interfering with the behavior they are observing to prevent modifications in the natural behavior of those observed by their presence.
An example of this type of observation are some documentaries in which the scientists, researchers, and cameramen of this do not influence the natural dynamics, but are limited to passively observe and draw their conclusions about what they observe.
According to the above, answers A, B, D, and E are not correct because they refer to types of observations in which the observer interferes with natural dynamics. While option C does provide a statement that corresponds to naturalistic observation.
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Scientists at the tar pits discovered that many of the smaller animals they extracted from the pits still exist around Los Angeles today. But many of the larger mammals—such as woolly mammoths and saber-toothed tigers—are now extinct. Why do you think this is the case? What can scientists learn about Los Angeles’ climate history by studying the specimens found in these tar pits?
Answers
By analyzing specimens found in these tar pits, scientists learn how climatic changes during the ice age affected life in this region.
What is ice age?Any geologic period in which thick ice sheets cover vast areas of land is referred to as an ice age. Large-scale glaciation can last millions of years and drastically alter the surface features of entire continents.
The La Brea Tar Pits are a collection of tar pits in Los Angeles. Many fossilized remains of ancient organisms were extracted from the tar, including Western horses, prehistoric camels, three-toed tapirs, rodent bones, insects, mollusks, wood, plants, and so on.
Radiometric techniques have dated the oldest fossils to approximately 38,000 years ago.
Furthermore, many of the fossil species extracted from the tar are still present today, indicating how these species adapted to changing climatic conditions.
Whereas certain species were unable to adapt quickly enough as the environment changed and thus became extinct.
Thus, this can be learned about Los Angeles’ climate history by studying the specimens found in these tar pits.
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Your question seems incomplete, the probably complete question is:
The La Brea Tar Pits in Los Angeles are the site of millions of fossils from the ice age. Woolly mammoths, giant sloths, dragonflies, and other plants and animals from this era have been found in these pits. Scientists at the tar pits discovered that many of the smaller animals they extracted from the pits still exist around Los Angeles today. But many of the larger mammals—such as woolly mammoths and saber-toothed tigers—are now extinct. Why do you think this is the case? What can scientists learn about Los Angeles' climate history by studying the specimens found in these tar pits?
HELPPPPPPPP MEEEEEEEEE PLZZZZZZZZ
Answers
Answer:
hi
Explanation:
Answer:
What do you need help with?
Which is the best example of a response to an external stimulus?
A. drinking water after a long run
B. avoiding the sun by looking for food at night
C. a hungry bear hunting for food
D. falling asleep in the treetops of a forest
will mark brainiest
Answers
Answer:
B
Explanation:
I'm not 100% sure.... but that one is the only choice I would pick
Answer:
A
Explanation:
Which of the following are requirements for evolution by natural selection 1 environmental change
|| differential survival and reproduction Iii heritability of phenotypic Iv variation variation in phenotype V sexual reproduction a. II, III, V b. II, IV, V c. II, III, IV d. III, IV, V e. I, II, IV
Answers
Evolution by natural selection refers to the mechanism that is responsible for species’ survival, diversification, and extinction. The two requirements that are fundamental to the process of natural selection include; differential survival and reproduction and heritability of phenotypic variation.
The heritability of traits that allow individuals to survive and reproduce can lead to differential survival of individuals that possess them, which results in a change in the frequency of these traits within a population over time. This process is known as natural selection.The correct answer to the question is option B: II, IV, and V. Natural selection requires several factors to bring about evolution. The three requirements for evolution by natural selection are differential survival and reproduction, variation in phenotype, and heritability of phenotypic variation. Sexual reproduction also influences evolution, but it is not a requirement for natural selection.
Natural selection and evolution occur in the following way: there is a variation in a trait, the variation leads to differential survival, and over time, the trait becomes more or less frequent. When the frequency of a trait changes due to natural selection, it leads to evolution. Hence, options II, IV, and V are requirements for evolution by natural selection.
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2. If you had convincing evidence that at least half of Greenland's glaciers were sure to melt
during this century, would you argue for taking serious actions now to slow projected
climate disruption? If so, summarize the arguments you would use. If not, explain why
you would be opposed to such actions.
Answers
We need to expedite all the process towards the migration to renewable sources of energy to prevent climate disruptions.
What is climate change?The term climate change has to do with the alteration of the usual weather patterns which could be traced to several anthropogenic activities. We know that since the industrial revolution, the activities of man do have certain harmful effects on the environment.
One of the harmful activities that we find on the environment is found in the fact that we are releasing a very large amount of carbon dioxide into the environment and this is upsetting the delicate carbon - oxygen balance and the excess carbon dioxide is preventing the escape of the infrared rays into outer space causing the temperature of the earth to rise astronomically.
This is causing the polar ice caps to melt and they may not remain at the end of the century.
This calls for urgent regulation of the carbon burden on the atmosphere by the switch to alternative sources of energy which are sustainable and eco friendly.
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What category of osteoporosis medication was she prescribed?
Answers
The choice of osteoporosis medication will depend on a variety of factors, including the severity of the bone loss, the patient's age and overall health, and any other medications the patient may be taking.
What are the categories of the osteoporosis medication ?The question is incomplete hence I am going to discuss all the classes of the osteoporosis medication.
Bisphosphonates: These drugs, such as alendronate and risedronate, work by slowing down the breakdown of bone and reducing bone loss. They are taken orally, usually once a week or once a month.
Selective estrogen receptor modulators (SERMs): These drugs, such as raloxifene, work by mimicking the effects of estrogen in the body and reducing bone loss. They are taken orally, usually once a day.
Calcitonin: This hormone, which is naturally produced in the body, helps to regulate calcium levels and reduce bone loss. Synthetic calcitonin is available as a nasal spray or injection and is usually taken daily.
Hormone therapy: Estrogen replacement therapy (ERT) or hormone replacement therapy (HRT) may be used to treat osteoporosis in women who have gone through menopause. These drugs work by increasing bone density and reducing the risk of fractures.
Parathyroid hormone (PTH) analogues: These drugs, such as teriparatide, are synthetic versions of the parathyroid hormone and work by increasing bone formation. They are given as daily injections.
RANK ligand inhibitors: These drugs, such as denosumab, work by blocking a protein called RANK ligand, which plays a key role in bone resorption. They are given as injections every six months.
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What is the value of the expression 3 divided by 3/4
Answers
Answer:
4
Explanation:
If we have the expression, 3/3/4.
Then this is the same as 3 × 4/3
Which is the same as 12/3
Which is the same as 4
Hence the value of the expression 3/3/4 is 4
Erwin Chargaff's research determined the percentage of the nitrogen bases within a strand of DNA. His work determined thatthe concentration of adenine is twice the concentration of thymine and the concentration of cytosine is twice the concentration of guanine.the percent of adenine is equal to the percent of guanine and the percent of cytosine is equal to the percent of thymine.the percent of adenine is equal to the percent of thymine and the percent of cytosine is equal to the percent of guanine.the concentrations of adenine, thymine, guanine, and cytosine are all equal.
Answers
Erwin Chargaff's research determined the composition of the nitrogen bases within a strand of DNA. His work determined that DNA composition varies, but the amount of adenine is always the same as thymine and the amount of cytosine is always the same as guanine. Chargaff also found that the composition of DNA varied from one species to another.
We can conclude that the correct answer is:
Answer:the percent of adenine is equal to the percent of thymine and the percent of cytosine is equal to the percent of guanine.WHAT AARE UNICELLULAR ORGANISM
Answers
Answer:
Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism
Answer:
A unicellular organism, sometimes known as a single-celled organism, is a single-cell creature, as opposed to a multicellular organism, which has many cells. Prokaryotic organisms and eukaryotic organisms are the two types of unicellular creatures.
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have a great day!
does the ploidy change during ur lifetime?
Answers
The ploidy does not change during your lifetime because most cells are diploid, meaning they contain two sets of chromosomes. This remains constant throughout your life.
Ploidy refers to the number of complete sets of chromosomes in a cell. The ploidy of an individual's cells typically does not change during their lifetime. This means that if an individual starts off with diploid cells (containing two sets of chromosomes), their cells will remain diploid throughout their life.
However, there are some exceptions to this, such as in cases of polyploidy, where an individual may have more than two sets of chromosomes in their cells due to abnormalities in cell division. Additionally, certain cell types, such as germ cells (sperm and egg cells), undergo a special type of cell division called meiosis which results in haploid cells (containing only one set of chromosomes) that are used for sexual reproduction.
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you get 45 for doing this and i need it fast
Compare and contrast a frameshift mutation and a single nucleotide substitution mutation in a DNA sequence encoding a protein. How many nucleotides would be inserted or deleted in each? How many amino acids in the protein sequence would be altered in each?
Answers
The alteration of one or maybe more nucleotides causes a frameshift mutation, which can have a profound impact on the protein sequence by shifting the reading frame.
What are nucleotides and what do they do?The building blocks of DNA and RNA are nucleotides. They have genetic material in them. As coenzymes, nucleotides are necessary for enzymes to catalyze various biological processes. In our bodies, energy is stored as ATP.
What makes nucleotides so crucial?Basic components of nucleic acids, energy storage, transporters of activated compounds for biosynthesis, structure components of coenzymes, and physiological regulators are all roles that nucleotides play in the physiology of animals.
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A blue whale is about 25 m long and Earth’s circumference is about 3 × 107 km. How many blue whales would need to lie nose to tail to encircle the Earth?
1.3 × 10^9
75 × 10^10
75 × 10^7
1.3 × 10^6
Answers
A blue whale is about 25 m long and Earth’s circumference is about 3 × 10⁷ km , then 1.3 × 10⁹ blue whales would need to lie nose to tail to encircle the Earth ,therefore the correct answer is option A .
What is a unit of measurement?A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
As given in the problem a blue whale is about 25 m long and Earth’s circumference is about 3 × 10⁷ km.
Thus ,if a blue whale is about 25 m long and Earth’s circumference is about 3 × 10⁷ km , then 1.3 × 10⁹ blue whales would need to lie nose to tail to encircle the Earth ,therefore the correct answer is option A .
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Which of the following plants produces seeds but not flowers: A. Maize B. Mint C. Peepal D. Pinus
Answers
A gymnosperm plant is Pinus. Pinus plants lack flowers because the ovules that are on their megasporophyll are exposed. However, it also produces seeds (from the ovule upon fertilisation) similar to the other three angiosperm plants described.
What is a gymnosperm?The vascular plants known as gymnosperms have ovules, or seeds, that are not protected by an ovary. They also generate seeds. These plants includes cycads, ginkgo, yews, among conifers, as examples. A Greek word gymnospermos, which means "naked seeds," is where the word "gymnosperm" originates.
Which five gymnosperm species are examples?Gymnosperms include conifers (including pines and cypresses), cycads, gnetophytes (including Gnetum, Ephedra, and Welwitschia), and also Ginkgo (a single living species).
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what type of relationship does the bacteria and the squid have? competition commensalism mutualism parasitism
Answers
The squid has evolved to live in a symbiotic relationship (mutualism) with the bioluminescent bacteria species Vibrio fishery, which serves to protect the squid from its predators and prevent it from being seen by its prey.
Years of research have been devoted to using the Hawaiian bobtail squid as a symbiotic model with the bacteria that produce bioluminescence in its light organ. Researchers have now discovered a tiny compound generated by the bacteria that appears to play a significant role in their colonization of the light organ using a potent chemical analysis method.
The establishment of the symbiosis may be significantly aided by a tiny chemical generated by bioluminescent bacteria when they invade the Hawaiian bobtail squid's light organ.
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