Answers
Answer:
Different acids make different salts.
Explanation:
a hydrochloric acid
b sulphuric acid
c nitric acid
Related Questions
Which of the following is an example of gene flow?
O The movement of people on Earth steadily increases and alters the course of human evolution
An earthquake results in the formation of a canyon, splitting a population of toads apart
O A fire drastically reduces the size of a white-tailed deer population. The remaining individuals spread out throughout the remaining forest
A small population of grasshoppers gets blown away and isolated during a storm. The gene pool of the new population is different from the original population
Answers
An example of gene flow is: A. The migration/movement of people on Earth which gradually increases and alters the course of human evolution.
What is Gene Flow?Gene flow, which can also be referred to as gene migration, is the transfer of genes or genetic material from one population of a species to another.
Migration of humans from one region to another leads to people of one race intermarrying with people of another entire race.
For example, A European migrating to North America, and getting married to a North American thereby giving birth to offspring exhibiting traits of booth a European and a North American. A gene flow has occurred.Therefore, an example of gene flow is: A. The migration/movement of people on Earth which gradually increases and alters the course of human evolution.
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Answer:
A
Explanation:
I took the test
1. A yellow legged rooster was crossed with a white legged hen. All fifteen of the offspring were yellow legged. What is the genotype
Answers
They were all affected
Explanation:
did you know that those superheroes and was very hard so I might take is a go for the letter B
Below are the reduction half reactions for chemolithoautotrophic nitrification, where ammonia is a source of electrons and energy and oxygen is the terminal electron acceptor.
NO2- + 6e- -> NH4+ (+0.34 volts)
O2 + 4e- -> 2H2O (+0.82 volts)
Using the information given, calculate the ΔE for this reaction, balance the full reaction to determine the n, the number of electrons transferred when 440 moles of NH4+ are oxidized. Finally, use the simplified Nernst Equation
ΔG = -nFΔE, where F = 96.5 kJ (mol e- × V)-1
to determine the Gibbs Free energy available to do work!
Report your answer in kJ rounded to two decimal places.
Answers
The Gibbs free energy available to do work for the reaction is approximately -15,427.20 kJ, rounded to two decimal places.
To calculate the Gibbs free energy (ΔG) available to do work for the given reaction, we need to use the formula:
ΔG = -nFΔE
where ΔE is the potential difference, n is the number of electrons transferred, and F is the Faraday constant (96.5 kJ/(mol e- × V)).
First, let's calculate the ΔE for the reaction by subtracting the reduction potential of the anode (NH4+ to NO2-) from the reduction potential of the cathode (O2 to H2O):
ΔE = E(cathode) - E(anode)
= (+0.82 V) - (+0.34 V)
= +0.48 V
Next, we need to balance the full reaction to determine the number of electrons transferred (n) when 440 moles of NH4+ are oxidized. The balanced equation is as follows:
8NH4+ + 6O2 -> 8H2O + 6NO3- + 16H+
From the balanced equation, we can see that for every 8 moles of NH4+ oxidized, 6 moles of electrons are transferred.
So, the number of electrons transferred (n) when 440 moles of NH4+ are oxidized can be calculated as:
n = (6 mol e- / 8 mol NH4+) × 440 mol NH4+
= 330 mol e-
Therefore, when 440 moles of NH4+ are oxidized, 330 moles of electrons are transferred.
Now, let's substitute the values into the equation:
ΔG = -nFΔE
= -(330 mol e-) × (96.5 kJ/(mol e- × V)) × (+0.48 V)
Calculating this expression, we find:
ΔG ≈ -15,427.20 kJ
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What methods allow scientists to tell the age of rocks and what does this tell us about the Earth’s history
Answers
Answer:
One method that allows scientists to tell the age of the rocks are radiometric dating; this method is done by finding the natural radioactive decay of elements like carbon; for EX. rocks found deeper in the core of the earth will have less carbon than rocks found shallower in the earths core.
What this method can tell us about the history of earth is that through the collection of the levels of carbon and other properties that were in the air from older rocks, we can tell if an event occured during the earths history that configured those properties in the rock.
Explanation:
How does the current affect plankton and nekton life?
Answers
Answer:
Advection by ocean currents modifies phytoplankton size structure at small scales (1–10 cm) by aggregating cells in different regions of the flow depending on their size. This effect is caused by the inertia of the cells relative to the displaced fluid
visking Tubing Iodine Name the physiological process being Investigated
Answers
The physiological process being investigated is diffusion.
What is diffusion?Diffusion is the movement of molecules from a region where they are more concentrated to one where they are less concentrated.
The net movement of molecules is from a region of high concentration to one of low concentration during diffusion.
In a cell, there are four different kinds of transport systems.
These are main active transport, secondary active transport, facilitated diffusion, and simple diffusion.
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Muscle that is found around organs such as the intestines and blood vessels is known as:
A. Striated muscle
B. Voluntary muscle
C. Cardiac muscle
D. Involuntary muscle
Answers
Answer: D Involuntary muscle
Explanation: The muscle that is found around organs such as the intestines and blood vessels is known as the smooth muscle, but another word for smooth muscle is the Involuntary muscle. Sorry if it’s wrong.
2. (3) Refer to the module notes for the details of the expression of eye colour in fruit flies. Would it ever be possible to cross two red-eyed fruit flies and get white-eyed offspring? Explain, showing if/how this can happen; response must include the Punnett square(s).
Answers
When crossing two red-eyed fruit flies (RR) with a homozygous white-eyed fruit fly (rr), it is not possible to get white-eyed offspring.
How to determine crossing?In fruit flies, eye color is determined by a gene located on the X chromosome, with the red eye allele (R) dominant over the white eye allele (r). The expression of eye color follows the rules of sex-linked inheritance.
To determine if it is possible to cross two red-eyed fruit flies and get white-eyed offspring, we need to consider the genotypes of the parent flies and their potential offspring using a Punnett square.
Assume the red-eyed fruit fly is homozygous dominant (RR) and the white-eyed fruit fly is homozygous recessive (rr).
Punnett square for the cross between RR (red-eyed) and rr (white-eyed) is attached.
As shown in the Punnett square, all the offspring will have the genotype Rr, which corresponds to red eye color. Therefore, when crossing two red-eyed fruit flies (RR) with a homozygous white-eyed fruit fly (rr), it is not possible to get white-eyed offspring.
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Summarize the findings of other scientists in Germany and Boston that support the work of Calderon-Garciduenas
Answers
Calderón-Garcidueñas has conducted research on the impact of air pollution on the brain and cognitive function. Other scientists in Germany and Boston have also conducted studies that support her work and findings.
In Germany, a group of researchers conducted a study to investigate the effects of air pollution on brain structure and cognitive function in a large population of older adults. The study utilized neuroimaging techniques to assess brain volumes and cognitive tests to evaluate cognitive performance. The findings revealed a significant association between long-term exposure to air pollution and reduced brain volume in regions related to memory and learning. The study also found that higher levels of air pollution were associated with poorer cognitive performance in various domains.
In Boston, researchers focused on the impact of air pollution on children's brain development. They conducted a study involving a cohort of children and assessed their cognitive abilities using standardized tests. The study found that children exposed to higher levels of air pollution exhibited lower cognitive scores, particularly in areas related to attention, memory, and language skills. The researchers also observed structural changes in the brain, specifically in regions involved in cognitive control, in relation to air pollution exposure.
These studies from Germany and Boston provide additional evidence supporting Calderón-Garcidueñas' findings regarding the detrimental effects of air pollution on the brain and cognitive function. They reinforce the notion that long-term exposure to air pollution can lead to structural changes in the brain and have a negative impact on cognitive abilities. The collective findings highlight the importance of addressing air pollution as a public health concern and implementing measures to reduce pollution levels to safeguard brain health and cognitive development, particularly in vulnerable populations such as children and older adults.
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(250 word essay)
What are the environmental problems of this ecosystem and what would be the solution to these problems?
Answers
Answer:
Air pollution is one of the biggest threats to the environment and affects everyone: humans, animals, crops, cities, forests, aquatic ecosystems, and much more. Since the Industrial Revolution, people have been polluting the Earth like never before. There is seldom a place today that has not been subjected to pollutants in one shape or another. Air pollution can be defined as an alteration of air quality that can be described by measures of chemical, biological or physical pollutants in the air. Therefore, air pollution means the unwanted presence of impurities or the strange rise in the proportion of some components of the atmosphere. It can be categorized into 2 areas: visible and invisible air pollution. Air pollution is caused by the presence in the atmosphere of harmful substances, mainly built by human activities, even though occasionally it can result from biological phenomena such as volcanic eruptions, dust storms, and wildfires, also depleting the air quality. The basic answer for air pollution is to drive away from fossil fuels, replacing them with alternative fuels like solar, wind, and geothermal. Creating clean energy is necessary. But equally crucial is to reduce our consumption of fuel by assuming trustworthy habits and using more efficient machines. From planning to destruction, the green building seeks to create environmentally accountable and resource-efficient systems to reduce its carbon footprint. In addition, monitoring air pollution levels has evolved into extremely necessary to detect pollution highlands, better manage air pollution, and ultimately enhance air quality.
Explanation:
You need 4 more words.
Some common environmental problems that ecosystems may face and potential solutions are habitat loss and fragmentation, pollution, climate change, loss of biodiversity, invasive species, overexploitation of resources, etc.
Habitat loss and fragmentation: Ecosystems can be impacted by the destruction and fragmentation of habitats due to human activities such as deforestation, urbanization, and infrastructure development. Solutions include implementing protected areas, reforestation and habitat restoration programs, and sustainable land-use practices.Pollution: Pollution from various sources, including industrial activities, agricultural runoff, and improper waste disposal, can degrade ecosystems and harm organisms. Solutions involve implementing stricter environmental regulations, promoting cleaner production methods, improving waste management systems, and raising awareness about pollution prevention.Climate change: Rising global temperatures, altered precipitation patterns, and increased frequency of extreme weather events pose significant challenges to ecosystems. Solutions include reducing greenhouse gas emissions, transitioning to renewable energy sources, promoting energy efficiency, and adapting conservation strategies to mitigate the impacts of climate change.Invasive species: Non-native species can outcompete native species, disrupt ecological processes, and negatively impact biodiversity. Strategies to address invasive species involve early detection and rapid response programs, implementing control measures, and preventing the introduction and spread of invasive species through improved biosecurity measures.Overexploitation of resources: Unsustainable harvesting of natural resources, such as overfishing, illegal logging, and poaching, can deplete populations and disrupt ecosystem dynamics. Solutions include implementing sustainable management practices, enforcing regulations, promoting responsible consumption, and supporting local communities in adopting alternative livelihoods.Loss of biodiversity: Ecosystems are facing a global decline in biodiversity, with species extinction rates accelerating. Solutions involve establishing protected areas, conserving critical habitats, promoting sustainable land-use practices, and raising awareness about the value of biodiversity.Learn more about Ecosystem, here:
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a researcher has 15 pure bred wild mice which were bron and all were females. they were all mated with a male called Bob.All the offspring were brown/ these were then crossed among themselves with the the following results 293 brown and 115 white. determine the color of bob
Answers
Answer:
1. Brown.
2. Brown colour is dominant.
3. 2.5 : 1
Explanation:
The colour of Bob is brown because the offspring produced from mating are also brown. The dominant colour in these mice are brown due to presence of this brown colour in all mice. We know that dominant traits always appear in the form and structure of an organisms and we see all mice have brown colour so we can say that the dominant colour is brown. The ratio of brown to white in the 'grandchildren' are 2.5 : 1 means more mice has brown colour as compared to white.
The light reactions of photosynthesis occur when light energy is absorbed by the chloroplasts of cells of photosynthetic organisms
Which of the following is produced during the light reactions?
A.chemical energy in the form of ATP and NADPH
ОВ.
B.Carbón dioxide
C.chemical energy in the form of glucose
D.light
Answers
Answer:
A
Explanation:
G o o g l e
Chemical energy in the form of ATP and NADPH
What information did you include in your answer?
Check all that apply.
the definition of theory
the definition of hypothesis
a reference to repeated experimentation
when a hypothesis is tested
an example of a theory, such as the cell
theory
a connection between the definitions of
theory and hypothesis
Answers
I characterized the theory as a well-supported clarification and the hypothesis as a proposed clarification for testing. I emphasized rehashed experimentation and gave a case of the cell hypothesis.
What is the information I included in my answerBased on the given alternatives, the data included in my answer include:
The definition of theory.The definition of hypothesis.A reference to rehashed experimentation.When a hypothesis is tried.A case of a theory, such as the cell theory.An association between the definitions of theory and hypothesis.I gave the definitions of hypothesis and theory, clarifying that a hypothesis could be a well-substantiated explanation for a marvel whereas a theory may be a proposed clarification to be tried. I said the importance of rehashed experimentation in approving or negating theories.
I too insinuated the method of testing the hypothesis. Furthermore, I advertised the case of the cell theory as a logical hypothesis. In conclusion, I associated the definitions of hypothesis and theory, highlighting their relationship within the logical strategy where hypotheses are proposed and tried to back or challenge existing hypotheses.
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Brainliest for the correct answer who put in the answer first. please help me.
Arianne recently traveled abroad where she enjoyed eating food from different countries and learning about different cultures. A week after she returned home, she checked into the hospital with signs of nausea, fever, and diarrhea. What best explains what happened to Arianne?
A.A parasitic bacteria contaminated her food.
B.A mutualistic bacteria infected her digestive system.
C.A commensalistic organism is now living in her intestine.
D.A predatorial organism is consuming her natural bacteria.
Answers
Answer: A parasitic bacteria contaminated her food.
Explanation: All of the symptoms listed are signs of contamination, specifically a parasite in someone's food.
Deer mice are usually dark brown and live in forests with dark soil. However, the deer mice in the Sand Hills of Nebraska are lighter brown and live in an area with light, sandy soil.
Based on this information, what ,begin emphasis,most,end emphasis, likely caused the change in the Sand Hills deer mice?
Answer options with 4 options
A.
Lighter colored mice were preferred by females.
B.
Lighter colored mice came from snowy habitats in the north.
C.
Lighter colored mice had more dominant genes in their new habitat.
D.
Lighter colored mice were more likely to avoid predators and to reproduce.
Answers
Lighter colored mice were more likely to avoid predators and to reproduce. Therefore, option (D) is correct.
The lighter brown coloration of the deer mice in the Sand Hills of Nebraska is likely an adaptation that provides them with a survival advantage in their specific habitat. The light, sandy soil in the area may offer better camouflage for lighter colored mice, making them less visible to predators and increasing their chances of survival.
As a result, these mice would have a higher likelihood of successfully reproducing and passing on their lighter coloration traits to future generations.
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What are three things that affect an enzymes activity
Answers
Answer:
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Answer:
Factor 1: Concentration of Enzyme
Factor 2: Concentration of Substrate
Factor 3: Effect of Temperature
What is the dew point if the dry bulb temperature is 20 C and the relative humidity is 17 %?
Answers
The dew point if the dry bulb temperature is 20°C and the relative humidity is 17 % is 1.6°C.
Dew point is the temperature at which air becomes saturated with water vapor and begins to condense. The dew point is a significant meteorological parameter that represents the measure of atmospheric humidity. The dew point is a critical component in calculating relative humidity and heat index.
It also plays a crucial role in predicting the possibility of dew, frost, and fog. Given the dry bulb temperature of 20 C and the relative humidity of 17%, we can calculate the dew point as follows:First, find the saturation vapor pressure using the equation:Es = 6.11 × 10(7.5T / (237.7 + T))where T is the temperature in degrees Celsius.So, Es = 6.11 × 10(7.5 × 20 / (237.7 + 20)) = 23.48 mmHg.
Next, find the actual vapor pressure using the formula: E = RH/100 × E_s where RH is the relative humidity as a percentage. So, E = 17/100 × 23.48 = 3.99 mmHg. Finally, we can calculate the dew point using the formula: Td = (237.7 × log10(E/6.11)) / (7.5 - log10(E/6.11))Td = (237.7 × log10(3.99/6.11)) / (7.5 - log10(3.99/6.11)) = 1.6°C. Therefore, the dew point is 1.6°C.
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O Consider the diagram that depicts the lysogenic and lytic cycles. The steps of the lysogenic cycle are shown. In Step A, attachment and entry occurs. In step B, the provirus is formed. In step C, the cell begins to divide. In step D, the provirus leaves. In step E, the virus is replicated and assembled. In step F, lysis and release of the virus occurs. In which step of the diagram is the provirus formed? step A step B step E step F
Answers
The correct answer is Step B
Explanation:
The lysogenic and lytic cycles are processes of replication for viruses. These two processes involve different steps. In general, the first stage involves attachment and penetration as the virus enters the host cell. This step is followed by the provirus, which means the genome of the virus is integrated into the DNA of the cell, this step is also mentioned in the model as part of step B "the provirus is formed". Moreover, the formation of the provirus is key as the nutrients of the host cell and genome are used for replication. Thus, in the diagram, the provirus is formed in step B.
Answer:
step b on edge is your answer
Explanation:
can i get a brainliest?
HELPPP PLEASEEEE
THE QUESTION IS IN THE PICTURE
A. DNA
B. Amino Acid
C. RNA
D. Polypeptide
Answers
The Nucleic acids that we have are DNA and RNA.
What are Nucleic acids?This question is incomplete but I will try to give you a general idea about the Nucleic acids.
Nucleic acids are large biomolecules that play a crucial role in the storage and transfer of genetic information in cells. There are two types of nucleic acids: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Both DNA and RNA are essential for the functioning of cells, and their structure and function have been studied extensively by scientists, leading to a greater understanding of genetics, evolution, and the molecular basis of life.
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The picture indicates the structure of RNA because it has URACIL.
What is RNA?Ribonucleic acid (RNA) is a nucleic acid that is present in all living cells that has similarities in structure to DNA. Unlike DNA, RNA is often single-stranded. An RNA molecule is made of alternating phosphate groups and sugar ribose, as compared to the deoxyribose that is found in DNA. Uracil is the nitrogenous base that is present in RNA.
It is made up of nucleotides which are ribose sugars that are attached to nitrogenous bases and phosphate groups. Nitrogenous bases such as adenine, guanine, uracil, and cytosine are present in them. RNA is mostly present in single-stranded, but there are special RNA viruses that have double-stranded.
So we can conclude that option C is the correct answer.
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11. A forensic anthropologist noted that a set of skeletal remains exhibited the following traits: wide subpubic angle on the pelvis, a completely fused coronal suture, and a skull with a V-shaped mandible. Which description best supports the skeletal findings? a. The skeletal remains most likely belong to a male over the age of 60. b. The skeletal remains most likely belong to a male under the age of 60. c. The skeletal remains most likely belong to a female over the age of 60. d. The skeletal remains most likely belong to a female under the age of 60.
Answers
The skeletal remains most likely belong to a female over the age of 60. Option C
How do we identify the skeletal remains?The skeletal remains most likely belong to a female over the age of 60.
A wide subpubic angle on the pelvis is a characteristic of female skeletons.
Completely fused coronal suture is an indication of middle age but could differ from person's to person.
A skull with a V-shaped mandible is also more common in females than males. The age of the individual can be estimated from the fusion of the coronal suture, which typically occurs between the ages of 30 and 40.
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Which of the following best describes the role of photosynthesis and cellular respiration in the cycling of carbon through the atmosphere?
A. Photosynthesis in plants puts carbon back in the atmosphere and cellular respiration in animals removes carbon from the atmosphere.
B. Photosynthesis and cellular respiration remove carbon dioxide from the only geosphere atmosphere.
C. During photosynthesis and cellular respiration, carbon becomes a part of glucose and is used as a nutrient to both plants and animals.
D. Cellular respiration in animals plus carbon dioxide in the atmosphere for plants to use during photosynthesis.
Answers
Answer:
A
Explanation:
I got the question right
What parts develop from the embryonic structure pharyngeal Slits?
back, abdominal, arm, and leg muscles
the heart and other parts of the circulatory system
post an*l tail and other muscular parts
head structures such as gills or ear canals
Answers
Pharyngeal slits only appear in mammals and birds during the embryonic stage of development, which is true of the majority of terrestrial animals.he jaw & inner ear bones in these animals emerge from the pharyngeal slits.
What do human pharyngeal slits develop into?Pharyngeal slits for food filtering evolved to gills for oxygen extraction 570 years ago, and eventually into the upper and lower jaw & pharynx, which includes the thyroid gland, mouth, larynx (voice box), and other glands and muscle between the.
The pharynx is where anything travels.By allowing water from of the mouth to leave via the slits, pharyngeal slits aid in the breathing and feeding of fish and primitive chordates.Although organisms can filter this water for food, fish gills evolved to be attached to these slits.
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Select the correct answer from each drop-down menu. When is used to explain a set of observations, there is always a chance that an alternative explanation may be more accurate. In the practice of science, this type of reasoning is used to develop explanations. rights reserved Reset Next Jun 14
Answers
In the practice of science, hypothesis testing is used to develop explanations, acknowledging the possibility of alternative, more accurate explanations.
When hypothesis testing is used to explain a set of observations, there is always a chance that an alternative explanation may be more accurate. In the practice of science, this type of reasoning, known as critical thinking, is used to develop explanations. Scientists formulate hypotheses based on available evidence and conduct experiments or gather data to test them. However, they remain open to the possibility that their initial hypothesis may be incorrect or incomplete. By considering alternative explanations and conducting rigorous testing, scientists strive to uncover the most accurate and reliable explanations for natural phenomena. This process encourages objectivity, peer review, and the advancement of knowledge, allowing for a deeper understanding of the natural world.For more such questions on Hypothesis testing:
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Which step is part of the engineering design process but is not part of a
scientific investigation?
Answers
The step which is a part of the engineering design process but is not part of a scientific investigation is to imagine
What is scientific investigation?Scientific investigation simply refers to those steps and procedures used to in unraveling the science behind a particular naturally observed phenomena.
So therefore, the step which is a part of the engineering design process but is not part of a scientific investigation is to imagine
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How does genetic variability allow these lizard populations to survive ?
Answers
The Hawaiian Islands are chain of volcanic islands nearly 2000 miles away from the nearest plate boundary. At which location does the movement of tectonic plates form isolated volcanic islands such as Hawaii?
subduction zone
divergent boundary
hot spot
transform boundary
_______________
As early as the 1600s, scientists noticed that the continents appeared to fit together like puzzle pieces. The idea that the continents were once together and had drifted apart was not widely accepted. In the 1940s, technology used on submarines led to evidence of continental movement. This radar technology allowed the scientists to do which of these?
to explain the causes of continental movement
to determine fossil evidence of continental drift
to reject theories of continental drift
to prevent further movement of continents
_________________________________
When an earthquake occurs, the speed of the seismic waves changes as they what?
are pulled by the force of gravity.
lose energy to surrounding rocks.
reflect off of boundaries.
move through different materials.
__________________________
The continental crust floats on top of the mantle because the crust is _____.
made up of oxygen which is a light element.
made of a liquid material.
separated from the mantle by a layer of water.
____________________________________
Which best describes the mantle of Earth?
a thin layer that is located on the surface
a solid layer made of iron and nickel
the largest layer between the crust and outer core
the smallest layer that is made up of molten rock
15 points.
Answers
Answer:
1. Hot spot
2. To explain the causes of continental movement
3. Move through different materials
4. Separated from the mantle by a layer of water. (Not a good answer, but the other two are entirely wrong!) It is because of density
5. The largest layer between the crust and outer core
Explanation:
Volcanoes can also form in the middle of a plate, where magma rises upward until it erupts on the seafloor, at what is called a “hot spot.” The Hawaiian Islands were formed by such a hot spot occurring in the middle of the Pacific Plate. While the hot spot itself is fixed, the plate is moving.
They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
Seismic waves travel more quickly through denser materials and therefore generally travel more quickly with depth. Anomalously hot areas slow down seismic waves. Seismic waves move more slowly through a liquid than a solid.
Continental crust floats higher in the mantle than ocean crust because of the lower density of continental crust.
The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84 percent of Earth's total volume.
definition, Structure and function of Zymogens
Answers
Which of the following lists the levels of biological organization from smallest to largest
Answers
Answer:
The levels of biological organization, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
Explanation:
Hope this helps!
Answer:
Molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
What plane is
the segittal sutures located
Answers
following are the types of functions performed by proteins in the human body
Storage
Support
Regulation
Defence
Select the appropriate type of function of proteins for each of the given descriptions
Description Type of Function
1. Recognition of foreign molecules ????
2. Receptors of extracelluar signals ????
Answers
Answer:
1. Recognition of foreign molecules - Defense
2. Receptors of extracellular signals - Regulation
Explanation: