Why does natural selection not produce populations that are perfectly adapted to their environment?.
Answers
Natural selection not produce populations that are perfectly adapted to their environment because Changing environments may change the nature of adaptive traits in a population.
No single trait is optimal in all environments, and natural selection may favor different traits as the environment changes.
What is Natural selection ?An evolutionary mechanism is natural selection. Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this mechanism leads to the evolution and divergence of species.
Populations change throughout time through natural selection, becoming increasingly adapted to their surroundings. Natural selection is reliant on the environment and necessitates the presence of heritable variation within a population.Learn more about Natural selection here:
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Related Questions
Why
volcanoes
form at
divergent
boundaries?
Answers
Answer:
Volcanoes tend to form at divergent boundaries because this is where two tectonic plates are moving apart from each other.
When this happens, magma from the Earth's mantle rises up to fill the gap that is created between the two plates. As the magma continues to rise, it eventually reaches the Earth's surface and forms a volcano.
Intense heat and pressure that is created by the movement of the tectonic plates can also cause the magma to erupt and create a volcanic eruption.
Explanation:
Why is it important for the spindle to carefully organize chromosomes during mitosis?.
Answers
For chromosome mobility to be facilitated, the chromosomes must compress during mitosis.
Colchicine is a substance that is used to freeze the cells during the mitotic process in order to block or inhibit the movement of the chromosomes. Additionally, the faithful replication or transmission of the genome to those daughter cells depends on this mechanism. Cells divide during the interphase, however cell condensation is discovered to be taking place during the prophase. Chromosomes are permitted to travel prior to the mitotic process, and during this time, entanglements and breaks were also seen.
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HELP ME FAST PLEASE What is a gamete?
a cell from a zygote with the diploid number of chromosomes
a cell used for reproduction that contains the haploid number of chromosomes
a cell used to protect the internal parts of the body that contains the diploid number of chromosomes
a cell used for reproduction that contains the diploid number of chromosomes
Answers
Answer:
a cell used for reproduction that contains the haploid number of chromosomes.
Explanation:
A gamete is a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
The function of carbohydrates is to provide energy to organisms true or false
Answers
Answer:
true
Explanation:
What causes cirrhosis of the liver other than alcohol?.
Answers
Answer:
Chronic hepatitis B and hepatitis D
Help??? Independent & Dependent Variables along with the constant.
Answers
independent : the variable that you're testing: Watering the seed before planting
Dependent : the measurement: how long it will take the plant to grow
constant : stays the same: the type of plant
hope that helps , thats what i think it is
What is it called when their is a group within a species that differs genetically and physically from other groups
Answers
Answer:
it is called a Cline
Explanation:
write two important pieces of info on the hazards of being fat.
WILL MARK BRAINLIEST!!
Answers
Being fat can cause you this
type-2 diabetes
heart disease
high blood pressure
high blood cholesterol levels
gall bladder disease
Some cancers
arthritis
Sometimes, geologists will also use ______
to represent a specific period of time to help them find an age.
Answers
Answer:
use a scale
Explanation:
Geologists also use radiometric dating methods to help them find an age that represents a specific period of time.
What is Radiometric Dating method?
Thermal ionization mass spectrometer used in radiometric dating. Geologists use the process of radiometric decay to determine the age in years of Earth material and to determine the timing of geological events such as excavation and subsidence.
Potassium–argon (K–Ar) dating is the main applied technique of radiometric dating where potassium is a constituent in many common minerals and can be used to determine the age of igneous and metamorphic rocks. The potassium-argon dating method is the measurement of the accumulation of argon in a mineral.
Thus, geologists also use radiometric dating methods to help them find an age that represents a specific period of time.
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Find the domain and range of the function. f(x)=|2x|-sin x
Answers
Answer:
Domain: (-∞,∞) , {x|x ∈ R}
Range: , {x|}
Explanation:
Do snakes have tails or is it just head and tail?
Alright, listen up. Snakes. More specifically, their bone structure, it’s just a skull and spine. A tail is essentially just a part of the spine extending outwards to create a separate limb/attachment. So would a snake just be a head and then tail (unless a rattlesnake) and if not, where exactly would the tail part start?
Answers
They have both. The actual tail of a snake is a relatively short bit at the end, behind the anus, similarly to any other vertebrate animals. Most of the snake's body is the torso, and the neck is also short tho
The following table describes some biotechnological processes.
Biotechnological Processes
Process Description
1 Producing offspring that have identical DNA as one parent
2 Crossing a high-yielding fruit variety with a high-vitamin variety
Which biotechnological processes are described in the table? (3 points)
a
Both processes describe cloning.
b
Both processes describe genetic engineering.
c
Process 1 describes cloning and process 2 describes artificial selection.
d
Process 1 describes artificial selection and process 2 describes cloning.
Answers
Answer:
c . Process 1 describes cloning and process 2 describes artificial selection.
Explanation:
Process 1 describes cloning because offspring is produced that are similar to its parent and we know that in cloning, the offspring is identical to their parents while on the other hand, process 2 describes artificial selection because crossing between a high-yielding fruit variety with a high-vitamin variety is done which is only possible through the intervention of humans.
Please help and thanks
Answers
All glycerol-containing phospholipids are synthesized from: A) cardiolipin B) ceramide. C) gangliosides. D) mevalonate. E) phosphatidic acid.
Answers
All glycerol-containing phospholipids are synthesised from: E) phosphatidic acid.
Phosphatidic acid is the precursor for the synthesis of glycerol-containing phospholipids. These phospholipids, which include cardiolipin, are important components of cell membranes and play vital roles in cellular processes. Phospholipids are the major constituent of the cell membranes of the cells found in the human beings. Phospholipids contain phosphate group and lipids.
The simplest (diacyl) glycerophospholipid found in cells is phosphatidic acid, which has established itself as a second messenger with clear biological implications. It plays a significant function in membrane fluidity and cellular signalling in all eukaryotes and is specially recognised by a variety of proteins.
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Use the table of information about a student's investigation to answer the question.
Object Mass (g) Drop Height (m) Speed (m/s)
5
A
B
50
50
5
20
30
Which question is the student trying to answer?
(1 point)
O Does changing the mass of an object affect its speed?
O Does changing the speed of an object affect its kinetic energy?
O Does changing the kinetic energy of an object affect its mass?
O Does changing the height from which an object is dropped affect its mass?
Answers
When there is simply gravity acting on an object while it is falling, mass has no bearing on how fast it travels. Speed is not directly impacted by mass. It establishes how quickly an object can increase its speed (accelerate) in response to a specific force. Lighter objects change their speed by a given quantity with a given force in a shorter amount of time.
Because mass and momentum are directly correlated, an object's momentum will increase as its mass decreases. Momentum will also grow as an object's velocity increases. Increases in velocity have exponential consequences since velocity is squared in the equation for kinetic energy. Doubling an object's mass doubles its kinetic energy, but doing so while doubling its velocity quadruples it.
What about mass?In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force. The change that an applied force produces is smaller the more mass a body has. The dimensionless quantity mass is used to express the amount of matter contained in a particle or object (symbolized m).The kilogramme is the International System's (SI) preferred unit of mass (kg). It is the most fundamental characteristic of matter and one of the fundamental quantities in physics. Mass is a term used to describe how much matter is there in a body.The kilogramme is the SI unit of mass (kg). A body's bulk remains constant at all times. The amount of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass.Examples of objects with mass include a table, a chair, your bed, a football, a glass, and even air. Your mass follows you wherever you go in the cosmos, yet your weight changes depending on where you are.Learn more about mass here:
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Please help me asap ill mark you as brainiest
Answers
Answer:
Probably A
the biosphere is mostly not blue and D just isn't relevant to that question
Answer:
The hydrosphere looks blue and covers three-fourths of the Earth's surface.
During labor, certain hormones are released that cause the contraction of the uterus in order to push the baby out. When those hormones are sensed by the glands of the endocrine system, they secrete more of that hormone which keeps labor going until the baby is born.
Answers
Answer:
The endocrine system assists in maintaining and regulating different functions of the body by producing and discharging hormones. It comprises glands situated throughout the body, which produce chemicals known as hormones directly into the blood. The levels of hormones in the blood are monitored by a highly unique homeostatic mechanism known as feedback.
The two kinds of feedback are common, that is, negative and positive feedback, of this positive feedback, is the rare mechanism. It augments the changes done rather than opposing them. For example, the discharging of oxytocin from the posterior pituitary gland at the time of labor is an illustration of a positive feedback mechanism.
The stimulation of the muscle contractions, which pushes the baby via the birth canal is done by oxytocin. This discharging of oxytocin leads to an augmented or stronger contraction at the time of labor. This contraction is enhanced and intensify until the baby comes out of the birth canal. However, when the stimulus to the pressure receptor terminates, the generation of oxytocin ceases, which eventually results in the stopping of labor contractions.
Answer:
positive
Explanation:
e2020
Sentence on the monomers and polymers of Carbohydrates
Answers
The fundamental building blocks of all sugars and starches are monosaccharide units, which are the monomers of carbohydrates.
What are the monomers and polymers of carbohydrates?Disaccharides and polysaccharides, each made up of two or more monomers, are examples of the polymers of carbohydrates.
The monomers that makeup carbohydrates are called monosaccharides. One illustration of a monosaccharide is glucose, a big molecule composed of subunits that repeat (monomers).
Therefore, a polymer comprised of repeated monosaccharides is known as a carbohydrate.
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which of the following answers describes a component that is present in prokaryotic organisms? pick all that apply
Answers
Prokaryotic organisms are unicellular organisms that lack a nucleus and other membrane-bound organelles. They are found in the domains Bacteria and Archaea.
There are many components present in prokaryotic organisms. Some of them are discussed below:
Cell wall: This is a tough, protective layer that surrounds the cell membrane in bacteria and archaea. The cell wall is made up of peptidoglycan in bacteria and other materials in archaea.
Flagella: It is a whip-like structure that is used by many prokaryotic cells to move. The flagellum rotates like a propeller, allowing the cell to swim through liquid environments.
Pili or fimbriae: These are short, hair-like structures that extend from the surface of many prokaryotic cells. They are used for attachment to surfaces or other cells.
Capsule: It is a protective layer that surrounds the cell wall of some prokaryotic cells. The capsule is made up of a gel-like material that helps the cell to avoid being engulfed by immune cells such as macrophages.
Ribosomes: They are the site of protein synthesis in prokaryotic cells. Ribosomes are made up of two subunits that come together to form a functional ribosome.In conclusion, components that are present in prokaryotic organisms are cell wall, flagella, pili or fimbriae, capsule, and ribosomes.
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(Look at Photo) + (Brainliest)
Which of the following represents arrow A?
A. Carbon Dioxide
B. Glucose
C. Oxygen
D. Blood Vessel (capillary)
Answers
Explanation:
If they talk about the animal answer is C oxygen
If they talk about the body answer is B Glucose
Other than that no clue since there is no picture
Brainliest, please?
You are studying a population of Dlugosch’s Small Octopus that has been suffering from a skin disease. In your work, you find that some individuals have more resistance (immunity) to the disease than others. You remember learning about life history trade-offs in your Ecology class, and you hypothesize that immunity trades off with investments in other major life history traits in the octopuses. You decide to design a study to test whether higher immunity leads to a lower number of eggs produced by females.
9. State a prediction for what the results of your study would look like if they support the hypothesis given in the Mission.
Make a figure of results that would be consistent with that prediction:
Label y axis with the variable that should be on the
Label x axis with the variable that should be on the
Draw results bars or lines consistent with your prediction
If the infection reduces the population size of the octopus, would you predict an r or a K strategy would be more likely to evolve (based on what we discussed in class)? Explain why that life history strategy would be favored in a small population, and give at least two traits associated with the strategy that you predict.
Answers
If higher immunity leads to a lower number of eggs produced by females in Dlugosch's Small Octopus, then there will be a negative correlation between immunity level and egg production.
A K approach would be more likely to develop if the illness causes the octopus population to decline. Resources are few in a tiny community, therefore long-term stability and survival are prioritized over rapid population expansion. The K approach emphasizes having fewer kids while allocating more resources to ensuring their survival and welfare. In a small population, the following two characteristics connected to a K strategy might be more prevalent:
Increased parental care: Parents invest more time and resources in raising a smaller number of offspring to increase their chances of survival and reproductive success.
Delayed maturation: Individuals take longer to reach reproductive maturity, allowing them to invest more time in growth, development, and building up resources before reproduction.
These traits help ensure the survival and success of the limited number of offspring in a small population, aligning with the K-selected life history strategy.
In this figure, the y-axis represents the number of eggs produced by females, and the x-axis represents the immunity level of the octopuses. The bars or lines would show a decreasing trend as the immunity level increases, indicating a negative relationship between immunity and egg production.
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Will mark brainliest! I need answer as soon as possible please!
Answers
Answer:
The possibilities of what will happen will be the North free magnet and the silk held magnet will repel and the other side of the magnet will be attacted to the north side of the magnet
Explanation:
Which feature of Earth is part of the hydrosphere?
air
fish
glaciers
rocks
Answers
Answer:
Glacier
Explanation:
It is a form of water.
Answer:
Glaciers
Explanation:
They're found in polar areas in/near water
Which statement describes an experimental procedure a scientist could have
conducted that is properly controlled?
A. An online poll gathers information about which indoor houseplant
is the easiest to maintain.
B. The weights of laboratory mice are measured each day for six
weeks.
C. Twenty tadpoles are exposed to a pesticide, and after three weeks,
the same 20 tadpoles are exposed to a different pesticide.
D. Fifteen pumpkin plants are grown in sunlight, another 15 pumpkin
plants are kept in darkness, and their stem lengths are measured
after three weeks.
Answers
The statement describes an experimental procedure a scientist could have conducted is twenty tadpoles are exposed to a pesticide, and after three weeks, the same 20 tadpoles are exposed to a different pesticide. The correct option is C.
What is an experiment?An experiment is a planned procedure that is done by taking variables. The variables are used in a controlled amount, then the result is noted down.
The control experiment will be in which the variables and the changes will be controlled. The pesticide's amount can be controlled that is given to the tadpoles.
Thus, the correct option is C.
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Kelp play a substantial role in building the structure for kelp forests impacting species richness. Which statement best explains the role of kelp forests in maintaining the diversity of the ecosystems? (3 points) Kelp forest act as ecosystem engineers. Kelp act as an invasive species. Without the otters to eat the kelp the feeding relationship would collapse. With the presence of consumers, kelp is an invasive species.
Answers
The statement that best explains the role of kelp forests in maintaining the diversity of the ecosystems is A. Kelp forests act as ecosystem engineers, this is
What are kelp forests?Kelp forests are found in shallow, cool waters and provide shelter, food, and nutrients for many animals such as sea urchins, sea stars, fish, and many other species. Kelp forests also provide a habitat for other important marine species like whales, seals, sea lions, and otters.
Kelp forests are known as the foundation species and the most important ecosystem in the ocean. They play a crucial role in maintaining the ecosystem balance. These forests have a considerable role in building the structure of the marine ecosystem and in maintaining species diversity. The kelp forests provide a habitat for a diverse range of species, which increases species diversity.
As a result, these species play an important role in maintaining the balance of the ecosystem. Thus, kelp forests act as ecosystem engineers (option A).
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PLEASE HELP AND GET POINTS!!
Drag each human activity to indicate which fossil fuel has influenced it. (1 point)
coal
natural gas
petroleum/crude oil
:: allowed people to refrigerate and cook food more easily :: increased people's use automobile transportation
:: made more efficient train locomotives :: allowed companies to build more factories
:: allowed people to store and package food and other products
Answers
The fossil fuels are as follows:
Use plastics to store food. - natural gas
Moving products. - Petrol
Supplying water heaters with electricity. - natural gas
Making steel for use in the building. - coal
How fossil fuel has influenced human activity?In sedimentary rock formations, which are collections of rock, dead plant and animal components, and layers of silt, coal is a substance that is frequently present.
Coal must contain more than 50% fossilized plant material, one type of sedimentary rock that holds oil in its natural state is shale.
Therefore, by heating, this substance, thick oil that may be utilized to generate gasoline is produced.
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Answer:
COAL: allowed companies to build more factories, made more efficient locomotives
NATURAL GAS: allowed people to refrigerate and cook food more easily
PETROLEUM/CRUDE OIL: increased people's use of automobile transportation, allowed people to store and package food and other products
Explanation:
Just took the test :)
environmental factors such as salinity and temperature can influence gene expression and cell differentiation. what is the role of these factors in gene expression?
Answers
Environmental variables can also affect cell differentiation and gene expression. For instance, temperature, salinity, and the amount of available nutrients can all affect how an organism's genes are expressed.
The Himalayan rabbit's genes that control fur color are activated and inactivated in response to temperature.The environment, which comprises the external environment in which an organism is placed or develops as well as the organism's internal environment, which includes elements like its hormones and metabolism, can affect how genes are expressed in an organism.Temperature and light are two additional environmental elements outside of medications and chemicals that can affect how certain organisms express their genes. The C gene, for instance, is present in Himalayan rabbits and is necessary for the formation of colors in the fur, skin, and eyes.
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Question 3(Multiple Choice Worth 4 points) High tides are experienced 12 hours apart for a certain coastline. Which of the following best explains the reason for this phenomenon? O The coastline becomes 90 degrees with the moon twice. O The coastline comes in a straight line with the moon once. O The coastline experiences tidal bulge twice a day. O The coastline experiences tidal bulge once a day.
Answers
High tides are experienced as the coastline experiences tidal bulge twice a day. Hence, high tides are experiences 12 hours apart for a certain coastline.
Tides are caused by the gravitational forces applied on the earth largely by the moon and also by the sun. This gravitational force causes the ocean water to be attracted towards the moon which creates a bulge in the ocean.
The earth's rotation can cause the waters that are affected to change. When the sun is parallel to the moon or relatively on the opposite side, these high tides are to be expected.
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plzzzz help. doing how due at 12
Answers
Answer:
they weigh the same amount
Explanation:
they will take up the same amount of room
Compare and contrast the prokaryotic kingdoms
Answers
Answer:
Bacteria: cells do not contain a nucleus. Archaea: cells do not contain a nucleus; they have a different cell wall from bacteria.
Bacteria have a unique compound called peptidoglycan in cell walls. Archaea have unique phospholipids in their plasma membrane and hydrocarbon tails that contain isoprene.
Explanation: