Walruses live in the Arctic and have a thick fat layer. The ancestors of the modern-day walruses might not have had such a thick layer. Over time, the walruses have probably changed. According to the theory of evolution by natural selection, what is the most likely reason that this change has probably occurred?

Answers

Answer 1

Answer:

The walruses that had thicker fat layers were more apt to survive and live to reproduce

Answer 2

Answer:

Explanation:

The walruses gained a thicker layer overtime because they adapted to the cold environment allowing them to slowly grow a thicker layer of fat.


Related Questions

asexual reproduction involves two-parent organisms
true or false

Answers

False, it includes 1 parent and produces a offspring as it’s asexual

n Which of the following correctly describe ozone gas? Check all that are true. protects the Earth from UV radiation Filt a particulate pollutant in the atmosphere healthy to breathe a gas produced by chlorofluorocarbons - O a gas made of three oxygen molecules​

Answers

Answer:

yes

Explanation:

that is true, but i do not understand the question?

Elements join together to form A. atomic mases B. compounds C. ions D. protons

Answers

your answer is B. Compounds

compounds, they form compounds

what is DNA replication similar to

Answers

Answer:

i wanna say RNA

Explanation:

DNA sequencing.
I remember this from Biology Freshman year!

How do I write a essay using the digestive urinary and excretory system to maintain homeostasis.

Answers

Homeostasis is balance. The shortest answer to your essay is that these 3 systems remove toxins from the body. Some of these toxins are in the air & food we take in, and some are just waste products after we process food.

The digestive system takes the food we eat, pulls out the energy we need to move and live, and passes on the waste to be excreted. If it didn’t excrete the waste, toxins would build up in the body.

The urinary system maintains homeostasis by filtering toxins out of the blood, and deciding how much water should be retained or wasted, based on our blood’s chemistry.

Another part of the excretory system is our skin. We sweat out toxins from exercise.

I hope these ideas are helpful to get to through your essay.

Beth broke her ankle bone. The doctor gives her a brochure on foods she can eat to help restore the health of her bones. Which element will help Beth strengthen the bone?
1.carbon
2.phosphorus
3.nitrogen ​

Answers

the answer that you are looking for is phosphorus

What process is the driving force behind evolution?

Answers

Answer:

Mutations and natural selection are the main ones

Explanation:

The process that is the driving force of evolution is natural selection, as natural selection is the phenomenon that explains that nature selects organisms over time to survive in ecosystems.

What is the significance of natural selection over time?

Natural selection is important for the survival of organisms as it is a process by which populations of organisms change over time in response to the outer environment. It is also an important evolutionary mechanism because natural selection always chooses the fittest and natural selection also drives the development of new species and helps ensure the survival of existing species.

Hence, the process that is the driving force of evolution is natural selection, as natural selection is the phenomenon that explains that nature selects organisms over time to survive in ecosystems.

Learn more about the process of natural selection here.

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What natural system purifies water?
A-carbon filtration
B-sewage treatment plant
C-particles precipitate out in oceans and lakes
D- the water cycle

Answers

Answer:

The water cycle

Explanation:

When water is evaporated whatever dirt or salt particles were in it do not get evaporated with it. So when it falls back to earth (as rain, snow, hail, ect.) it is technically pure, until something is added to it.

Answer:

The water cycle just had it on a quiz

Explanation:

what is the complementary DNA strand to ATCG

Answers

Answer: TAGC is the complementary DNA strand to ATCG.

Explanation: Hope this helps some.

A T C G

|   |   |   |

T A G C

Which of the following refers to the place where a species lives?
A
niche
B
habitat
С
ecosystem
D
biome

Answers

Answer:

habitat

Explanation:

Habitat refers to the natural environment or the natural place where an organism lives. Habitat also refers to the physical place where a species or a population lives. Hence, habitat of grizzly bear refers to the physical place where it lives.

Answer: B Habitat

A habitat meets all the environmental conditions an organism(any living thing) needs to survive

plssssss help Im giving almost all my points

Answers

Answer:

Eastern Africa consists largely of plateaus and has most of the highest. ... The Western Rift Valley curves along the western borders of Uganda and Tanzania. ... Apparently established in the 9th century, it is distinguished for its seawalls of coral

hope this was helpful

Explanation:

Look again at the enzyme diagram and it’s target molecule. How might a mutation affect the interaction between the enzyme and its target and the function of the enzyme in the organism?

Answers

By viewing the enzyme diagram and its target molecule, we can infer that a mutation might affect the interaction between the enzyme and target because it may change the shape of the enzyme and consequently inhibit its function.

What is a genetic mutation?

A genetic mutation can be defined as a permanent alteration in the DNA sequence that makes up a gene, which affects the production of a protein and may have a wide range of effects on the function of a cell.

Therefore, with this data, we can see that a genetic mutation may modify the protein and thus affect the reaction.

Learn more about genetic mutations here:

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Coal is a fossil fuel produced from plant material underground over very long geological periods of time. What are petroleum and natural gas originally formed from?

Answers

It was formed from the remains of ancient plants and animals.

plants are natures___________ conditioners ​

Answers

Answer:

air conditioners

Explanation:

Oxygen is always released from higher plants during photosynthesis

URGENT!!!

A nerve cell and a liver cell in the same dog make different proteins. Which of these statements best explains why different cells have make proteins? *


A) The different cells in an organism have different genes.


B) Each cell transcribes (reads) only the genes the cells need


C) The different cells in an organism all transcribe (read) the same genes, but their ribosomes make different proteins from them.


D) Each cell in an organism produces the same proteins, but the ones that aren't needed are immediately digested.

Answers

Answer:

C

Explanation:

The different cells in an organism all transcribe (read) the same genes, but their ribosomes make different proteins from them.

suggest why a baby born without any mitochondria will have difficulties growing

Answers

Answer:

or our bodies the conversion from food energy to ATP happens in mitochondria. If your mitochondria are not working properly then you are less able to convert food into ATP. For cells that require a lot of ATP, for example your muscles, this is a problem and they may become weaker and get tired faster.

Explanation:

A group of mountain gorillas has 10 members. How big is the group after 4 females emigrate, 2 females immigrate, 2 gorillas are born, and a male dies?(1 point)

1

9

13

7

Answers

It's 13 because at first you have 14 from 4 females emigrating then 2 leave giving you 12, then 2 are born giving you 14 again but then 1 dies giving you 13

From the original number of 10 gorillas, there are now 9 gorillas in this population. The correct option is B. After 4 females emigrated, 2 immigrated, 2 gorillas were borned, and 1 male died, there are 9 gorilas.

Available data:

10 gorillas in the original group4 females emigrate2 females immigrate2 gorillas are born1 gorilla dies.

So, from the original group, 4 individuals left, so

10 - 4 = 6 individuals

To the group of 6 gorillas, 2 individuals were added, so

6 + 2 = 8

In the group of 8 gorillas, 2 babies are borned,

8 + 2 = 10

And one individual died,

10 - 1 = 9.

The remaining number of individuals in this population is 9. Option B

You can learn more about additions and substractions at

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Tattoos and piercings are not acquired characters. True or false?

Answers

Answer:

False

Explanation:

It's false because you weren't or couldn't have been born with a tattoo, so you acquired the trait instead of inherited it.

Answer:

True

Explanation:

You are not born with them so they are not aquired.

This equation represents a biological process. In which organelle is this process completed?
C6H12O6 + O2 --> CO2 + H20 + ATP


Cell membranes

Mitochondria

Chloroplasts

Ribosomes

Answers

Answer:

Mitochondria

Explanation:

That equation is for Cellular Respiration and it takes place in the Mitochondria in the Cytoplasm

In an ecosystem, _______ are producers because they make their own food. A. plants B. herbivores C. omnivores D. animals

Answers

Answer: A. plants

Explanation:

 Plants are producers. They make their own food, which creates energy for them to grow, reproduce and survive.

what 2 parts of a chlorplast does photosynthesis take place

Answers

Answer:

The Grana and The Stroma.

Explanation:

I hope this helps u! :D

Answer: Photosynthesis occurs in geranium and stroma parts of chloroplast.

Explanation:

Chloroplast is an organelle covered by double membrane. Inner membrane is folded inside to form lamellae. The lamellae are stacked one above the other to from geranium. There are many grana in a single chloroplast. The remaining matrix consisting of cytoplasm is termed stroma. In the stroma are present other cytoplasmic inclusions like fragments of DNA and ribosome, etc.

Photosynthesis occurs in 2 steps:

1. Hill's reaction or Light reaction: It occurs in presence of light in geranium part of chloroplast.

2. Dark reaction or Blackmann's reaction: It does not require light directly, occurring irrespective of presence or absence of light. However, it is dependent upon the end products of light reaction. it occurs in stroma part of chloroplast.

The answer may be supplemented by viewing the diagram of electron microscopic structure of chloroplast from any book one may have, covering photosynthesis.

A parasite _____.

is always a fungi
never causes disease
can survive on its own
needs food from another organism

Answers

I believe the correct answer is option D. needs food from another organism. (:

Answer:

needs food from another organism

Explanation:

Im not sure what the answer is

Answers

The third option i think!:) im sorry if u get it wrong

hi, please help me with this biology question :)

the question is attached as an image. here are the answer choices:
a. large claw allele will increase, small claw allele will decrease
b. large claw allele will decrease, small claw allele will increase
c. large claw allele will decrease, small claw allele will decrease
d. large claw allele will increase, small claw allele will increase

i'd really appreciate help asap!

Answers

Answer:

a. large claw allele will increase, small claw allele will decrease

Explanation:

Looking at the graph we can see that the number of male crabs with larger claws is increasing every time while the smaller claws are decreasing.

How is a mean established?

Answers

Answer:

1 : to institute (something, such as a law) permanently by enactment or agreement. 2 obsolete : settle sense 7. 3a : to make firm or stable. b : to introduce and cause to grow and multiply establish grass on pasturelands.


Which of the following is the monomer of a protein? *
sugar
amino acid
fatty acid
nucleotide

Answers

Your Answer is anime acids

What happens to the cell’s genetic information during the cell cycle?

Answers

Answer:I think During most of a cell's life cycle, DNA, along with proteins, is a mass of loose strands called chromatin (KROH-muh-tin). Before cell divion, DNA is duplicated, or copied. Then, in an early stage of cell division, the chromatin is compacted into visible structures called chromosomes (KROH-muh-sohmz).Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.During interphase, the cell obtains nutrients, and duplicates (copies) its chromatids (genetic material). The genetic material or chromatids are located in the nucleus of the cell and are made of the molecule DNA. hope this helps have a nice night ❤️❤️❤️

Explanation:

Answer:Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set. And because During most of a cell's life cycle, DNA, along with proteins, is a mass of loose strands called chromatin (KROH-muh-tin). Before cell divion, DNA is duplicated, or copied. Then, in an early stage of cell division, the chromatin is compacted into visible structures called chromosomes (KROH-muh-sohmz).

Explanation:

photosynthesis uses this form of energy to drive the process

Answers

Answer:

i think its the energy of light

Explanation:

Answer:

Light energy

Explanation:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

WHO WANTS TO BE MARED BRAINELEST
Name three geological “phenomena” or changes to the earth’s crust that are caused by plate tectonics.

Answers

Answer:

volcanic eruptions, earthquakes, and tsunamis

Explanation:

Three geological phenomena that occur due to displacement of plate tectonics are:
1) Volcanic eruptions
2) Earthquakes
3) Tsunamis

help . ill mark u as Brain list​

Answers

Direction I think????
direction is up, net force is 2 up, and it’s balanced
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