Polar bears are believed to have evolved from brown bears 600,000 years ago.  Their white fur is an adaptation that allows them to better survive in their snowy environment.  This is an example of which mode of natural selection? Explain why you chose this answer.​

Answers

Answer 1

Answer:

Polar bears have thick, warm, white coats to use as a disguise to sneak up and attack and kill their prey. Overall polar bears have white coats to blend in with their suroundings

Explanation:


Related Questions

Which response occurs because of the hormone auxin?

Answers

Answer: The phototropic response occurs because greater quantities of auxin are distributed to the side away from the light than to the side toward it, causing the shaded side to elongate more strongly and thus curve the stem toward the light

WRITE ABOUT PACKAGING OF DNA DOUBLE HELIX IN EUKARYOTES AND PROKARYOTES ​

Answers

Explanation:

Packaging Of Dna Double Helix:

Prokaryotes

↬ No well defined nucleus.

↬ DNA is held with some proteins in nucleoid region.

Eukaryotes

↬ Histones:

↬ Positively charged proteins. ↬ Rich in arginine and lysine. ↬ 5 types:- H₁ H₂A, H₂B, H₃ H₄.

↬ Histone octamer:

↬ A pair of 4 histones.

↬ Nucleosome:

↬ DNA (-ve charge) makes two complete turns around the histone octamer (+ve charge) to form a nucleosome.

Answer:

in prokaryotes there is there is not proper neucloseomw

Which of the two sequences of rocks, a-d and e-g, was disturbed by crustal movements after its deposition?

Answers

Answer:

Sequence A-D was disturb by crustal movement after it was deposition. We have evidence in given cross section that sequence A-D was disturb by crystal movement just see above this sequence there is conglomerate bed which indicates it is uncomformity and that below uncomformity plane all beds are inclined so it clear evidence that sequence A-D got disturbance by crustal movement.

Explanation:

Sequence order and principal are given below.

one can order the event in any given cross section on the basis of apply some principal like order of super position, principal of cross cutting relationship, principal of inclusion, principal of original horizontality etc. Order of superposition tell us that if rock is undeformed then older rock would be at bottom and younger at top, principal of cross cutting relationship tell if some igneous body intruded in some rock layer so it mean that layer is older than age of intrusion.

what is the name of one of the lower chambers of the heart that receives blood from the upper chambers and pumps it into the arteries?

Answers

Answer:

Right Ventricles

Explanation:

Right ventricle receives blood from right atrium and pumps it into pulmonary artery.

Explain Why would you want to use topographic map on a hiking trip? (In paragraph please)

Answers

Answer:
You can use a topographic map´s a topographical map can help you determine the layers of mountains. It can also tell you the accurate coordinates and navigation.
Explanation:

Which level of biological classification do mammalia and hominidae represent, respectively? class and family order and class family and species species and kingdom

Answers

The biological classification for Mammalia taxonomic rank is the Class level, whereas Hominidae is a Family.

What is biological classification?

The expression 'biological classification' makes refers to the hierarchical levels of organization of life.

The main levels of this classification include domain, kingdom, phylum, class, order, family, and genus.

In conclusion, the biological classification for Mammalia taxonomic rank is the Class level, whereas Hominidae is a Family.

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Answer:

A. Class And Family

The level of classification goes:

Domain                 Eukarya

Kingdom               Animalia

Phylum                 Chordata

Class            >       Mammalia

Order                    Primates

Family          >       Hominidae

Genus                   Homo

Species                Sapiens

What is overconsumption? How does overconsumption mirror overpopulation?

Answers

Overconsumption is when a group uses up more of a resource than what is sustainably available. When a species is overpopulated, the resource needs of all the individuals are more than what is available in the environment so their consumption is over-consumption.

To help protect their neighborhoods and natural resources, people can phone, write letters, or petition companies and government agencies to consider the environmental effects of their actions.

True Or False?

Answers

It is true !!!!!!!!!
The answer is true. Most organizations recommend to write letters and petition for change.

The paris agreement intends to direct money toward limiting climate change
and lowering greenhouse gas levels. which groups are likely to benefit from
the paris agreement? select the three correct responses.
o a. solar power companies
o b. hydroelectric dam engineers
c. petroleum companies
d. hydraulic fracking operators
e. geothermal reservoir drillers
please help.

Answers

Answer:a,b,

Explanation:

The groups which are likely to benefit from the Paris agreement are solar power companies, and hydroelectric dam engineers. Thus, option A and B are correct.

What is Paris Agreement?

The Paris Agreement deals with production of those types of energy which is clean and which don't emit (or emit very less) green house gasses, the root cause of climate change and global warming.The term climate change has to do with the alteration of weather patterns owing to the release of harmful gases commonly called greenhouse gases.

The main goal of the Paris Agreement is to strengthen the global response to the threat posed by climate change by limiting the rise in global temperature this century to well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to further limit the temperature increase to 1.5 degrees Celsius.

Therefore, The groups which are likely to benefit from the Paris agreement are solar power companies, and hydroelectric dam engineers. Thus, option A and B are correct.

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what is the name for a bright red, spicy curry sauce often served with raita?

Answers

Chili Garlic Chutney (Red Chutney)

This sauce which is probably the least popular of the three, but has the bold spicy flavor. It is a vibrant spicy Chilli Garlic Chutney is a must have for chaats such as sev puri and papdi chaat.

Buffer zones _______. a. can help regulate the acidity of aquatic ecosystems b. help increase erosion rates c. are set up around natural resource areas d. all of the above please select the best answer from the choices provided a b c d

Answers

The main feature of buffer zones is that they are are set up around natural resource areas.

What are buffer zones?

Buffer zones are zones in a habitat which are designed to protect sensitive areas such as wetlands, wildlife reserves from negative external pressures.

Buffer zones at set up around natural resource areas.

Therefore, the main feature of buffer zones is that they are are set up around natural resource areas.

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This element is a gas, can only form one bond, and is found in compounds like carbohydrates. What is it?

Hydrogen
Water
Oxygen
or Carbon

Answers

AnswEr

⠀⠀Hydrogen is a gas which can only form one bond ( or single bond ) and , is found in carbohydrates .

⠀⠀⠀⠀⠀Because , It has only one electron in valence shell . To attain the electronic configuration of nearest inert gas , this element have only one electron to share , from which it can achieve his electronic configuration of nearest inert gas and complete his duplet .

In your own words wright a paragraph of the process of the circulatory system.

Answers

The circulatory system is made up of blood vessels which carry blood to and away from the heart

hello who can firgure it out

Answers

Answer:

C.

Explanation:

help please!!!
13 15 and 16
BIOLOGY

Answers

After being formed by the ribosomes located in the ER, the next organelle to which a protein could be transported is Golgi bodies through anograde pathway of protein transport.

What do you mean by Protein transport?

Protein transport may be defined as a process through which various proteins are migrated from the ER to the functional site after packaging into the vesicles.

Most likely the function of a long whip-like tail is to provide motility to the cell, which means movement.

Therefore, option D is correct in question number 16.

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A hypothesis must be _____.
controlled
testable
changed
scientific

Answers

Answer:

Testable

Explanation:

Hypothesis is a tentative idea that may prove to be the answer for problem so it may be testable

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

Answer:

testable

Explanation:

Explain two main concerns of using gmo in agriculture

Answers

GMO plants might have a different balance of toxins, increasing the risk of harm to humans. Specific health concerns include an increased risk of cancer and infertility, although research on the particular risks of GMO plant toxins is very limited.

Please help I'm confused!

Answer and Get Brainlist *If you get it right*

Thank you! :D
Tell me what to drag and the answer for the one is blank

Answers

The steps of protein synthesis are initiation, elongation, and termination.

Steps in protein synthesis

There are three steps in protein synthesis:

Initiation: during which the messenger RNA, the ribosome subunits, and the necessary enzymes all bind together to form the translation bubble and initiate the translation process.

Elongation: during which the peptide chain grows by the continuous addition of amino acids.

Termination: when the protein synthesis stops as a result of reading the stop codon on the messenger RNA.

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why do plants grown with less light grow taller than the ones grown with light

Answers

Hormones released down the stem from the tip of the stem inhibit stem expansion when exposed to light. The hormones do not impede stem growth in the dark. Seeds growing in the dark rely on chemical energy stored in their cells (lipids, proteins, and carbohydrates) to fuel their growth.

Topic: March Phenomenon

Answer:

The light slows stem elongation by sending hormones down the stem from the tip of the stem.

Explanation:

Hormones do not slow stem elongation in the dark. Dark-grown seeds rely on the chemical energy stored within their cells (lipids, proteins, carbohydrates) to power their growth.

referenced from https://stemeducation.nd.edu/

1 a has ears more than half the length of the head

Answers

I think it would be a rabbit??

How does Nervous system organized?

Answers

Answer:

The brain and spinal cord are the organs of the central nervous system. Because they are so vitally important, the brain and spinal cord, located in the dorsal body cavity, are encased in bone for protection. The brain is in the cranial vault, and the spinal cord is in the vertebral canal of the vertebral column.

Explanation:

Hope its the right ans...

Answer: It is organized into two parts, the central nervous system and the peripheral nervous system

Explanation:

How is the DNA sequence
AATTA replicated in a new strand during replication?

Answers

Answer:

TTAAT

Explanation:

In a strand of DNA, Adenine and Thymine form complementary pairs, while Guanine and Cytosine form complementary pairs.  This sequence lacks Guanine and Cytosine.

Why is a predator/prey relationship important

Answers

Answer:

Predator-prey relations are an important driving force to improve the fitness of both predator and prey. In terms of evolution, the predator-prey relationship continues to be beneficial in forcing both species to adapt to ensure that they feed without becoming a meal for another predator.

Explanation:

Hope this helps!!

1. (c) How would the results of the experiment have differed if proteins carried the genetic information?

Answers

Answer:

in the qoridndt plan it woud grap diferint

Explanation:

Which statement could be supported by the graph?

Time versus Population Density Graph

a. The number of frogs will decrease in response to an increase in the fly population.


b. The number of grasshoppers will increase in response to an increase in the bird population.


c. The number of coyotes will decrease in response to an increase in the rabbit population.


d. The number of hawks will decrease in response to a decrease in the mice population.

Answers

Answer:

d

Explanation:

As the number of prey decrease, the number of predators will naturally decrease. Therefore, in option D, where hawks are the predators and mice are the prey, makes the most sensible answer.

Statement :

The number of hawks will decrease in response to a decrease in the mice population.

As per the graph, the correct answer here is that the number of hawks will decrease in response to a decrease in the mouse population, which is option D, as the rise of the predator would lead to the fall of the prey number in the ecosystem.

What is the prey-predator graph?

A prey-predator graph is a graphical representation of the relationship between a population of prey and their predators, and the graph shows how the population sizes of prey and predators change over time and how they affect each other. Prey and predator populations are closely linked. When there are more prey, there is more food available for predators, so predator populations tend to increase. However, as predator populations increase, they begin to consume more prey, which causes the prey population to decrease. As the prey population decreases, the predator population may also decrease due to a lack of food. This creates a cycle of predator-prey population fluctuations that can be observed on a prey-predator graph.

Hence,  As per the graph, the correct answer here is that the number of hawks will decrease in response to a decrease in the mouse population, which is option D.

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HURRY 100 points and a brainlest

Explain at least three pro’s and three cons of invasive species solution. Three reasons why it’s a good solution and three reasons why it’s not, or what challenges it faces.
Who are the stakeholders (people who would care about this issue)? Include those who are supportive of the solution and how it would benefit the environment, and people who would be opposed to the solution (usually they would lose money somehow). If there are no people opposed, state that.

Answers

Answer:

The direct threats of invasive species include preying on native species, outcompeting native species for food or other resources, causing or carrying disease, and preventing native species from reproducing or killing a native species' young.

Explanation:

A career as a manager of a business
requires the person to be able to handle
which of the following?
A. Only one position/job
B. Just one department
C. Multiple employees
D. Entire company advertising

Answers

Answer:

C

Explanation:

Sequence the steps in how a nerve impulse moves from one neuron to another neuron, by writing the numbers 1 to 5 in the squares to the left of the steps.

Help me please.

Answers

The steps in how a nerve impulse moves from one neuron to another neuron can be describe as dendrite – cell body – axon.

How does the nerve impulse occur?

The nerve impulse starts when the neuron experiences a stimulus strong enough to trigger it. This happens when a membrane is at resting potential, a condition where the inner surface of the membrane is negatively charged relative to the outer surface.

In this case, the correct steps will be in a neuron, the stimuli always propagate in the same direction: they are received by the dendrites, travel through the cell body, travel along the axon and, from the end of this, are passed to the next cell (dendrite – cell body – axon).

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which correctly lists three main causes of deforestation?

Answers

Lack of rain. Over cutting. Not replanting

Which result would be expected from comparing ATP yield in cellular respiration in plants and animal cells?
There would be no difference
There would be 50% more in plant cells
There would be 25% more in animal cells
O Plant cells make 38 ATP for every 4 ATP made by animal cells

Answers

The result that will be expected from comparing ATP yield in cellular respiration in plants and animal cells is : ( B ) There would be 50% more in plants cells

Difference between ATP yield in plant and animal cells

ATP is produced in the mitochondria during cellular respiration of plant and animal cells. Given that plants possess chloroplast which performs photosynthesis, this helps with an increase in the ATP yield in plant cells.

Therefore the 50% more of ATP yield will be present in plant cells when compared to ATP yield in animal cells.

Hence we can conclude that there would be 50% more in plants cells

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