Which of the following best describes why polar bears are a sub-species of brown bears instead of a completely separate species?
A. Because they both have thick fur and 4 legs, so they are very similar
B. Because they both live on the same continent, so they can’t be two separate species
C. Because they can still breed in the wild. Once they no longer mate with brown bears, they will be considered a separate species
D. All of the above

Answers

Answer 1
i think it is either c or d! hope this helps!!

Related Questions

Which is NOT a reason that a cat or dog owner should take his pet to a veterinarian to get vaccinated against the rabies virus?
A. to fool the pet's body into developing rabies antibodies
B. to protect the pet's body from developing rabies antibodies
C. to introduce a weaker form of the rabies virus in the pet's body
D. to protect the pet's body from future invasions of the rabies virus

Answers

B.

The body needs to make these antibodies, so B makes no sense.

As in mitosis, in Meiosis the chromosomes move toward opposite poles of a cell in____.

Answers

Answer

The chromosones move toward opposite poles of a cell in Anaphase

Describe the processes of transcription and translation.

Answers

Answer:

The process by which DNA is copied to RNA is called transcription, and RNA is used to produce proteins is called translation.

Explanation:

translation is the process in which ribosomes in the cytoplasm or ER synthesize proteins after the process of transcription of DNA to RNA in the cell's nucleus. ...
Transcription uses a strand of DNA as a template to build a molecule called RNA

Ocean ocean convergence produces

Answers

Answer:

Ocean-ocean convergences produce deep sea trenches.

Explanation:

Please Help Mark and Vikki live in two different areas of North America. The temperature in Mark’s town today is 30°F. The temperature in Vikki’s town is 82°F. In both towns, the relative humidity is 90%. Is the amount of water vapor in the air the same in Mark’s and Vikki’s towns? Explain your answer. Also Talk about which one has more water vapor

Answers

Answer:

I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.

Explanation:

I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.

See above

Please mark brainliest

Hope this helps.

Responding to the environment is a characteristic of life best shown by which example

Answers

Answer:

there are no examples provided

Explanation:

sorry I can't help without the examples

The hip bone of a whale and the appendix of a human are referred to as ______because they have little current importance but were important in the
ancestors of these organisms.

A.embryological structures

B.homologous structures

C.vestigial structures

D.mystery structures

E.analogous structures

Answers

C. vestigial structures

Compare and contrast fermentation and cellular respiration (at least 2 similarities and 2 differences explained in detail).

Answers

They're similar because they're both methods the cell uses to make ATP. ... Fermentation takes place without oxygen (also known as anaerobic), so less ATP is produced from each molecule of glucose. Another difference is that the byproducts of cellular respiration are always water and carbon dioxide.

I hope this helps

Which of the following is an example of a chemical change?

A. Breaking wood
B. Melting ice
C. Bending metal
D. Baking bread

Answers

Answer:

D. Breaking bread is an example of chemical reaction.

D.Baking bread (The bread is being baked, therefore its a chemical reaction)

Why do you think there is a ring with a dark gap within the body of the wood?

Answers

Near the end of the growing season, they produce denser, darker wood. The light-colored rings are the wood that grew in spring and early summer, while the dark rings indicate growth in late summer and fall. So, a light ring and dark ring together represent one year of growth.

How are plants pollinated?

Answers

Answer:

People can transfer pollen from one flower to another, but most plants are pollinated without any help from people. Usually plants rely on animals or the wind to pollinate them. When animals such as bees, butterflies, moths, flies, and hummingbirds pollinate plants, it's accidental. hope that helps love!!

FROM THE LUNGS, BLOOD COMES BACK TO THE HEART. DESCRIBE THE PATH THIS BLOOD FOLLOWS UNTIL IT ENTERS THE AORTA.

Answers

Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body.

Answer:

Tricuspid valve  is the path of blood through the heart and lungs

Explanation:

Blood is also responsible for transiting the blood and nutrients. The blood reached right atrium and from here it reached the right ventricles with the help of tricuspid valve. When the ventricles are full it closes to stop blood from going back to the atrium.

The inferior and the superior vena cava let the blood enter through them. The heart left the blood with the help of pulmonary valve to the pulmonary artery and the blood reached the lungs.  

By which process are fossil fuels formed?

Answers

Answer:

A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion. ... Fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.

HOPE IT HELPS : D

Explanation:

Based on the pedigree that is shown above, how to describe Fred?

Answers

Answer:

The given pedigree analysis shows sex-linked trait where the female work as a carrier and have X linked recessive gene that is [tex]X^{h}[/tex] and the male is normal.

So, Fred will be a male with [tex]X^{h}[/tex][tex]Y[/tex] gene and Fred will be affected with X linked disease which is carried by female.

If,  [tex]X^{h}[/tex] gene in the female (Ann)  act as a carrier of hemophilia and the male (John) is normal, then Fred will be a male affected with hemophilia (sex linked disease).

Hence, Fred will be affected male with  [tex]X^{h}[/tex][tex]Y[/tex] genotype.

Which question would be asked in a dichotomous key?
A. How long are the insect's antennae?
B. Are the insect's antennae longer than its head?
C. Are the insect's antennae long or short?
D. How does the insect use its antennae?

Answers

Answer:

B. Are the insect’s antennae longer than its head?

Explanation:

Dichotomous key refers to the tool or method which helps the scientist to identify organisms.

It uses a specific series of questions which help in segregation of organisms and ultimately help the scientist to identify the organism on the basis of the observations or properties share by the organism.

Example of a simple dichotomous key is shown below.

Similarly, insects can have antennae longer or shorter than their heads. Thus, the question "Are the insect’s antennae longer than its head?" would help in segregating insects based on their antennae length.

happy to help ya:)

The statement B is correct. Are the insect’s antennae longer than its head?

What do you mean by dichotomous keys?

A dichotomous key is an important scientific tool, used to identify different organisms, based the organism's observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.

Moreover, for example, in tree identification, a dichotomous key might ask whether the tree has leaves or needles. The key then directs the user down one list of questions if the tree has leaves, and a different question list if it has needles.

Therefore, dichotomous keys are useful for biological classification as well as identification. The word dichotomous is derived from the Greek words meaning “two parts.” Each step in the key provides two contrasting choices about a characteristic.

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In this phylogenetic tree, which two organisms on the tree would be expected to share the most characteristics?

sac fungi and cnidarians
amoebas and sponges
choanoflagellates and cnidarians
cnidarians and animals with bilateral symmetry

Answers

Answer:

Cnidarians and animals with bilateral symmetry.

Explanation:

I don't have a very good explanation as to how I got this answer, but I can tell you that I got this question right in my test. Good luck with yours. :)

BIOLOGY EXPERTS!!!! Shared core processes support the relatedness of all eukaryotes. Discuss how chromosome structure and function provides insights into the history of life on Earth.

Answers

Answer: Many eukaryotic organisms are related based on the shared core characteristics and processes.

Explanation:

The following are the shared core processes shared by all eukaryotes.:

1. Cytoskeleton: It is a network of structural proteins, that helps in movement of cell and organelle support.

2. Membrane-bound organelle: Mitochondria and chloroplast are organelles that formed via endosymbiosis these are present in all eukaryotic organisms.  

The DNA is the basic genetic material that is found in almost majority of living beings on earth. The DNA is being transmitted from the primitive organisms on earth to the modern day organisms. The chromosomes are the  carriers of DNA. These chromosomes are passed from the parents to the offsprings through reproduction. This is the basis of relatedness among organisms and these are also considered while studying the phylogenetic relationships.

What is a example of accretion?

Answers

Answer:

An example of accretion is the garage someone may bulid on his home.

Can u please help me .

Answers

Answer: lizards

Explanation:

Answer:

birds

Explanation:

because some birds such as owls, hawks, falcons, herons, etc. eat snakes.

Which life-forms appear to be extinct?
a. Sponges, Insects, and flowering plants.
b. Bony fishes, dinosaurs, and mammals
c. Sponges, insects, reptiles
d. trilobites, ammonoids and dinosaurs

Which life-form was most abundant 250 million years ago?
a. dinosaurs
b. reptiles
c. bony fishes
d. trilobites

Answers

Answer:

D for the first question and B for the second

Explanation:

trust

Answer:1.) D (trilobites, ammonoids and dinosaurs)

2.) B (reptiles)

Explanation:

Based on the graft

Many people place bat boxes on their property to provide housing that attracts insect -eating bats. Explain how this activity has a positive effect on the environment.

Answers

Answer:

Bat boxes at homes provide housing to insect-eating bats which has two major positive effects on the environment:

Bat boxes provide bats a natural habitat and they act as natural pest control in the environment. They are very helpful for reducing or controlling the population of mosquito and balance the food chain in the environment.Bat is known as very good pollinators which helps in the pollination of flowers or spread their seeds. So bat boxes at home increase pollination in nearby areas and increase biodiversity in the environment.

Hence, bat boxes at houses have a positive effect on the environment.

A student made a model of an onion skin cell she viewed using a microscope. The scale is 1:500.The students cell model has a length of 15cm. How many centimeters is the real cells length?

Answers

Answer:

Length of the real cells = 7500 cm

Explanation:

A scale model is a physical representation of an object that has the same aspects as that of the object.

A scale model can be used in fields like engineering, film making,  salesmanship, etc

Length of the student's cell model = 15 cm

The scale is [tex]1:500[/tex]

So,

Length of the student's cell model / Length of the real cells  = [tex]1:500[/tex]

15 / Length of the real cells  = [tex]1:500[/tex]

Length of the real cells  = 15 × 500 = 7500 cm

Answer:

7500 cm

Explanation:

we in the same grade problem i am on this test

Moving from left to write on the graph, what does the loan from D to E represent?

Answers

The loan from d to e represents evaporation

The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of World War I. More people died from the influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide? Your answer: A.All of the answer choices B.Infected soldiers returning from the war spread the virus when they coughed. C.Medical personnel often became ill as a result of exposure to airborne virus particles.

Answers

Answer:

C

Explanation:

medical personnel often became ill as a result of exposure to airborne virus particles.

A
The explanation to why the virus killed so many worldwide isn’t just limited to B or C. Many factors went into play.

The Hardy-Weinberg equation shows the frequencies of 100 percent of the alleles for a specific gene in a population.

If biologists can show that either p or q is changing over a period of time, what is occurring in the population?

The population is evolving.
The population is decreasing in size.
The population is stabilizing.
The population is not evolving.

Answers

Answer: I believe that the answer is that the population is evolving

Explanation: I hope that this helps

In Hardy-Weinberg equation, If biologists can show that either p or q is changing over a period of time, the population is decreasing in size.

What do you mean by Hardy-Weinberg equilibrium?

The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation.

The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

For populations in the Hardy-Weinberg equilibrium, the equation connects allele frequencies to genotype frequencies. This equation allows us to compare a population's genetic structure in reality over time to the expected genetic structure.

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what are 4 effects of global warming

Answers

The four effects of Global Warming are mentioned above. But there are also many effects of Global Warming.


Which evidence has led scientists to conclude that there are different layers within Earth's interior?
(1) analysis of earthquake wave data
(3) rock samples taken from Earth's core
(2) measurement of Earth's diameter
(4) temperatures taken within each layer

Answers

Answer:

Explanation:

1) análisis de datos de ondas sísmicas

Evidence has led scientists to conclude that there are different layers within Earth's interior based on analysis of earthquake wave data, measurements of Earth's diameter, and temperatures taken within each layer, so options 1, 2, and 4 are correct.

What is the significance of the different layers within Earth?

There are various layers on the earth with distinct significance, such as the crust and the upper part of the mantle, which make up the lithosphere, which is the solid part of the Earth, and the tectonic plates that are constantly moving and colliding, which causes earthquakes and volcanic activity. The core is the inner part that has the magnetic fields, and the mantle is the part present in between the crust and the core.

Hence, evidence has led scientists to conclude that there are different layers within Earth's interior based on analysis of earthquake wave data, measurements of Earth's diameter, and temperatures taken within each layer, so options 1, 2, and 4 are correct.

Learn more about the layers within Earth here.

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plz help!!!!!!!! A natural biological cooling process is sweating. Using your knowledge of endothermic and exothermic, explain why your body feels cooler when it sweats.

Answers

Answer and Explanation:

An exothermic reaction takes place when heat flows out of a system into its surroundings. ... When you sweat, the system – your body – cools down as perspiration evaporates from the skin and heat flows to the surrounding area. This means sweating is an exothermic reaction.

2 Points

How does the endocrine system affect the excretory system?

A. It sends messages using hormones.

B. It allows oxygen to diffuse across membranes.

C. It sends messages along action potentials.

O D. It produces digestive enzymes.

SUBMIT

Answers

Answer:

Option A

Explanation:

The endocrine system and the excretory system works hand in hand in maintained thé functions of the body and in this context that kidneys. The hypothalamus functions in monitoring the amount of electrolytes in the blood and an increase in this amount indicates dehydration among others, whose cause might be s a result of low water intake, too much sweat etc. Detecting this, the hypothalamus signals for the secretion of antidiuretic hormone which moves to the kidneys and stimulate the organ to reabsorb more water. This hormone is transferred to and released by the pituitary gland all these being part of the endocrine system.

Why do fatty foods take longer to digest than sweets?

Answers

Answer:

Fat digests more slowly than other foods and is energy-dense, packing more calories per ounce than other foods

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