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

What is the one part of the food chain that no one likes to talk about?

Answers

Answer:

Plants or decomposers.

Probably plants or decomposers

How would you handle new team members if you were an it manager?

a)schedule a kick-off meeting.
b)do nothing.
c)send them an e-mail outlining their responsibilities
d)tell other team members to speak to them


please help me its in career explorations 2
will give the brainiest

Answers

I think D is correct opinion

what are the characteristics of life on earth?

Answers

Answer:

Characters of life on Earth:Growth and Reproduction: Living organisms are able to grow and reproduce fertile offsprings.Genetics: Living organisms have the ability to the pass their traits on to their next generation.Response: Living organisms are able to respond to any stimuli.Respiration: Living organisms can respire, breath which makes them different from non-living organisms.Cellularity: Living things are made up of living cells.Homeostasis: Living things are able to balance their internal environment despite of what's happening in the external environment which is homeostasis.

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Which factor most accurately describes the statement ""survival of the fittest"" in relation to natural selection?.

Answers

Answer:

Predators

Explanation:

With natural selection, survival of the fittest can mean many things however one of the factors of which accurately describes the statement would be predators.

please answer my question correctly​

Answers

#1

Sea breeze part

When the land gets warmer in day time the warm air goes up To fill the free space created underneath the middle atmosphere cold air breezes from ocean surface towards land to fill up the free space .This is the reason why humidity remains at peak during day time on beach sides

#2

Land breeze part

In night time the opposite of day time appears ,the ocean surface gets warmer.The warm air rises upTo fill up the free space cool air from land surface goes there .Humidity remains less so we feel chill during night time

Answer:

#1

Sea breeze part

When the land gets warmer in day time the warm air goes up

To fill the free space created underneath the middle atmosphere cold air breezes from ocean surface towards land to fill up the free space .

This is the reason why humidity remains at peak during day time on beach sides

#2

Land breeze part

In night time the opposite of day time appears ,the ocean surface gets warmer.

The warm air rises up

To fill up the free space cool air from land surface goes there .

Humidity remains less so we feel chill during night time

What is the most important reason to control the conditions of an experiment?
Oto make the experiment easier to repeat
Oto reduce the amount of data that must be recorded
O because this is necessary for graphing the data
O because this is necessary for the data to be valid

Answers

Answer:

because this is necessary for the data to be valid

Explanation:

if we where to test how much light a plant needed to grow its best we cant water them differently because that eill also have a impact on a plants health and growth

the basic structural and functional unit of the human body is

Answers

Cells are the basic structural and functional unit of the human body

The outermost layer of earth's atmosphere is
A.troposphere
B.startosphere
C.mesosphere
D.thermosphere​

Answers

Answer:

the answer is D. Thermosphere

Compared to many other liquids, water has a high heat of vaporization, which means a relatively large amount of heat must be added to the water before the water molecules are moving fast enough to escape the surface as a gas. Which of the following explains why water has a high heat of vaporization?

A Adding heat to the water causes the molecules to move around, and the motion keeps pushing them back below the waters surface

B As water molecules heat up they tend to form more hydrogen bonds with each other, making it difficult for any of the molecules to vaporize.

C Water molecules have a relatively high molecular weight compared to other molecules, so more energy is needed for the water molecules to vaporize.

D Enough heat must be added to water molecules' hydrogen bonds to break the bonds and provide the molecules enough energy to escape the surface..​

Answers

Answer:

D

Explanation:

Water has a fairly high specific heat, which means that enough heat must be added to it to break the hydrogen bonds between the molecules, allowing them to move freely from each other and escape the water's surface.

Identify three ecosystem services of biodiversity.

Answers

Explanation:

Biodiversity provides us with drinking water, oxygen to breathe, food, medicine, decomposition of waste, and helps our planet withstand natural disasters.

Regulating Services.

Cultural Services

Supporting Services

According to the principle of original horizontality, what most likely happened to the rock layers in the background?

Answers

Answer:

They were deposited horizontally and then shifted by a geologic event.

Explanation:

Compare a sled’s potential energy at 10 m to its potential energy at 20 m. How does doubling height affect potential energy?

Answers

Answer:

It has an exponential effect. In contrast, you can reach a point when an object is so heavy that when dropped, it achieves terminal velocity. Without the factors of drag and general friction, all objects will fall at a velocity of around 9.8 meters per second. They must, however, accelerate to that speed. Increasing the high gives the sled more time to reach its top speed. That is, its potential energy grows.

Explanation:

an ecology graduate student gave an oral report. What important lesson has been learned about wildlife and forest management since the turn of the century, based on this information -

Answers

The important lesson learned is that the study of ecology can be fundamental in a management program.

What is ecology management?

The expression 'ecology management' makes reference to the strategies aimed at enhancing the ecological features of a geographic area.

Ecology management is a fundamental issue to achieve sustainable ecology development.

In conclusion, the important lesson learned is that the study of ecology can be fundamental in a management program.

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During what stage of development do cells
differentiate?
A. at fertilization
B. once birthed
C. as a zygote

Answers

Answer:

at fertilization

Explanation:

The biological information stored in organisms is in the sequence of nucleotide bases (i.s., A, T C and G) in DNA molecule. true false

Answers

Answer:

True

Explanation:

DNA: ATCG

RNA: UTCG

If a researcher tried shotgun sequencing with a single chromosome from a single cell, would the process work?.

Answers

Answer: No, there would be no overlap because there is only one piece of double-stranded DNA that is fragmented.

Explanation:

Magnifying Living Things
In this activity, you will look at six samples from living things under a magnifying glass.

Estimated time to complete: 20 minutes

You will need these materials:

magnifying glass (At least 10× magnification)
a leaf
a twig or tree bark
the skin on your hand
a flower
a strand of your own hair (or a sample of pet hair, if you have a dog or cat)
a sample of your choosing
Data Collection
In this activity, you will magnify samples from the five living things listed below. You must also include one sample of your own choice. Your sample could be from a plant, animal, human, or anything that is living.

a leaf
twig or tree bark
the skin on your hand
a flower
a strand of hair
a sample of your choosing (Grass)
Part C
Part C
Did you observe any other characteristics of life in your samples?

Part D
For each of your samples, research how the structures you observed under magnification help the organisms carry out basic functions of life. Write your findings in the space provided.

Answers

Answer:

"bark" (and any subsequent words) was ignored because we limit queries to 32 words

Explanation:

-_-

which of the following statements describes pepsin
a it is manufactured by the pancreas
b it helps stabilize fat water emulsions
c it splits maltose into monosaccharides
d it begins the hydrolysis of protein in the stomach

Answers

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D. it begins the hydrolysis of protein in the stomach

Scientists were studying the DNA from Antarctic fish, including two species of icefish, that have no hemoglobin in their blood. They constructed the following cladogram.

What can be interpreted from this cladogram?

Select all that apply.

A.The most closely related species to the hemoglobinless icefish is C. mawsoni.

B. The C. anarcticus is more closely related to C. mawsoni than it is to the other hemoglobinless icefish.

C. N. corliceps is the closest relative to the hemoglobinless icefish from the fish that were studied.

D. The two species of hemoglobinless icefish are more closely related to each other than they are to other Antarctic fish studied.

Answers

What can be interpreted from this cladogram is that the two hemoglobin-free icefish species are more closely related to each other than to other Antarctic fish studied.

What is cladogram example?

The cladogram is an important graphic tool used in phylogenetic studies, and represents the evolutionary relationships between different groups of organisms, such as

fishmammalsreptiles and birds.

With this information, we can conclude that what can be interpreted from this cladogram is that the two hemoglobin-free icefish species are more closely related to each other than to other Antarctic fish studied.

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What information can a scientist learn directly from a single fossil?
OA. How the organism is related to organisms on Earth today
B. How many offspring the organism
produced
C. What the organism looked like
D. How long the organism lived
SU
SAAMINE
KORT THING SPIRING HARU
P
FOUN
D
leve
PROTEILE SE
mais rond
SARDE
sang big

Answers

According to the research, a scientist can learn directly from a single fossil how long the organism lived and what it looked like.

What is a fossil?

They are the remains of an organism and the organic substances that present a certain degree of petrification and are naturally located in the various terrestrial layers.

These organic remains found in the strata of sedimentary rocks serve to date their ages, providing information on specific periods in the history of the planet.

Therefore, we can conclude that according to the research, a scientist can learn directly from a single fossil how long the organism lived and what it looked like.

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In order for high level expression of the E. coli lac operon to occur, a complex of catabolite activator protein and __________ must be bound to the DNA near the promoter.

Answers

In order for high level expression of the E. coli lac operon to occur a complex of catabolite activator protein and __CAMP__must be bound to the DNA.

What is E. coli lac operon ?

The E. coli lac operon is consisted of genes which are involved in the metabolism of lactose in the presence of lactose and absence of glucose. the operon is turned off and on by regulators based on the different levels of glucose and lactose.

Hence we can conclude that In order for high level expression of the E. coli lac operon to occur a complex of catabolite activator protein and __CAMP__must be bound to the DNA.

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In an area of 3 square miles there are 27 bears. What is their population density?

A. 9 bears / square mile C. 24 bears / square mile
B. 81 bears / square mile D. 30 bears / square mile

Answers

Answer:

9 bears per square mile

Have a nice day :)

Circle what kind of light each object emits.
(a) fire

incandescence / luminescence

Answers

Answer:

luminescence is the correct option of given statement

Fossil fuels such as gas, oil, and coal have what kind of energy?.

Answers

Answer:

chemical energy

Explanation:

The energy conversion goes from chemical energy stored in the fuels, to heat energy as it burns which is converted to kinetic energy as it drives large turbines and finally this is converted to electrical energy. The problem with burning fossil fuels is their effect on the environment.

How do molecules that are too large to pass through the spaces of the cell membrane move into the cell?
A. The molecule will break up into smaller pieces.
B. The molecule will shrink so that it can fit in the spaces.
C. The molecule will move through a matching protein channel.

Please only answer if your 100% sure, this is for a test.

Answers

Explanation:

cell by a process called endocytosis, where a small piece of the cell membrane wraps around the particle and is brought into the cell. If the particle is solid, endocytosis is also called phagocytosis. If fluid droplets are taken in, the processes is called pinocytosis.

Answer: C

Explanation:

Elizabeth wants to test DNA using Restriction Fragment Length Polymorphism (RFLP). What type of DNA sample would MOST likely be successful using RFLP

Answers

The type of DNA sample that would MOST likely be successful using RFLP is a sock soaked in human sweat.

What is RFLP?

Restriction Fragment Length Polymorphism (RFLP) is a type of molecular marker used to identify samples of DNA.

RFLPs are fragments of different lengths that can be separated by electrophoresis and then identified.

In conclusion, the type of DNA sample that would MOST likely be successful using RFLP is a sock soaked in human sweat.

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Answer:

a sock soaked in human sweat

Explanation:

a variation in the length of restriction fragments produced by a given restriction enzyme in a sample of DNA. Such variation is used in forensic investigations and to map hereditary disease.

Bacteria are
genetically modified
to grow...
A. crops to farm.
B. insulin and human growth hormone.
C. ingredients for make up products.
D. growth media for microbiology.

Answers

Answer:

B.

Explanation:

Have a nice day :),and hope this helps

Answer: B. insulin and human growth hormone.

Explanation:

Mackenzie notices that her best friend can apply paint in a perfectly straight line on a ceramic pot. Mackenzie knows
that paint is hard to control at times, but she tries it anyway and ends up stroking a straight line on first try, just like her
best friend. Did Mackenzie successfully model her best friend's painting skills?
No, because she didn't ask her friend for help.
Yes, because she observed her friend and knew she could do better.
Yes, because she was able to draw a straight paint line just as her friend did.
No, because she didn't have to try more than once.

Answers

Answer: C. Yes, because she was able to draw a straight paint line just as her friend did.

Explanation: I hope that helps have a great day!!

The water in vegetables evaporates over time causing the vegetables to wilt. Why do grocery stores spray water on their vegetables?.

Answers

Answer: For aesthetic reasons and to charge extra.

Explanation: Shoppers are more drawn to vegetables with water because they look more hydrated and “fresher”. Vegetables absorb moisture, so they will weigh more, therefore shops can charge more.

Organisms such as jellyfish and sea turtles depend on which ocean movements to find food and avoid predators? *

a. tides
b. waves
c. gravity
d. currents

Answers

Answer: D. Currents

Explanation:

A current is the movement of streams under the water. It carries organisms and other matter through the ocean. Jellyfish, although they can swim, mostly rely on currents to float through the water.

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Your task it help her to figure this out.% deletiveEditing(Initial,End).Each word consists of at least one and at most 30 uppercase English letters; Initial is the Daisy's initial word for the game; End is the final word that Daisy would like to get at the end of the game.?- deletiveEditing(['D','E','T','E','R','M','I','N','E','D'], ['T','R','M','E']).True.?- deletiveEditing(['D','E','T','E','R','M','I','N','E','D'], ['T','E','R','M']).False.?- deletiveEditing(['D','E','I','N','S','T','I','T','U','T','I','O','N','A','L','I','Z','A','T','I','O','N'], ['D','O','N','A','T','I','O','N']).True.?- deletiveEditing(['C','O','N','T','E','S','T'], ['C','O','D','E']).False.?- deletiveEditing(['S','O','L','U','T','I','O','N'], ['S','O','L','U','T','I','O','N']).True.2. Problem#2 Components:This program consists of the following engines: Planner Engine: is responsible for: Taking the query in prolog entered by the user. 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