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

Rabbits are best described as _______.
a.
producers
b.
primary consumers
c.
secondary consumers
d.
tertiary consumers



Please select the best answer from the choices provided


A
B
C
D

Answers

______________________________

Rabbits are best described as primary consumers.

Because they are dependent upon producers for their food.

Hope it helps

Good luck on your assignment

______________________________

Rabbits can be best described as primary consumers. The correct option is b.

What are primary consumers?

The 2nd trophic level is comprised of primary consumers. They are also known as herbivores. They just feed primary producers, including such plants or algae. A grasshopper, for example, is a primary consumer in the Everglades.

Primary consumers are rabbits because they are the first step up from autotrophs. Autotrophs, such as grass, are eaten by primary consumers such as rabbits.

The animals that eat the primary consumers are known as secondary consumers.

Herbivores are the primary consumers of plants. Primary consumers include caterpillars, insects, grasshoppers, termites, and hummingbirds, which only eat autotrophs (plants).

Rabbits are herbivores because they only eat plants - and herbivores are consumers because they eat plants to survive. Consumers include deer, grasshoppers, and rabbits.

Thus, the correct option is b.

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Read the passage from Darwin's journal. sorry its so long


The Amblyrhynchus, a remarkable genus of , is confined to this archipelago; there are two species, resembling each other in general form, one being terrestrial and the other aquatic. This latter species (A. cristatus) was first characterized . . . from its short, broad head, and strong claws of equal length, that its habits of life would turn out very peculiar, and different from those of its nearest ally, the iguana. It is extremely common on all the islands throughout the group, and lives exclusively on the rocky sea-beaches, being never found . . . even ten yards in-shore. It is a hideous-looking creature of a dirty black colour, stupid, and sluggish in its movements. The usual length of a full-grown one is about a yard, but there are some even four feet long; a large one weighed twenty pounds: on the island of Albemarle, they seem to grow to a greater size than elsewhere. Their tails are flattened sideways, and all four feet partially webbed. They are occasionally seen some hundred yards from the shore, swimming about; and Captain Collnett, in his voyage says, “They go to sea in herds a-fishing, and sun themselves on the rocks; and may be called alligators in miniature.” It must not, however, be supposed that they live on fish. When in the water, this lizard swims with perfect ease and quickness, by a serpentine movement of its body and flattened tail—the legs being motionless and closely collapsed on its sides. A seaman on board sank one with a heavy weight attached to it, thinking thus to kill it directly, but when an hour afterwards, he drew up the line, it was quite active. Their limbs and strong claws are admirably adapted for crawling over the rugged and fissured masses of lava, which everywhere from the coast. In such situations, a group of six or seven of these hideous reptiles may oftentimes be seen on the black rocks, a few feet above the surf, basking in the sun with outstretched legs.




What structural adaptation does the A. cristatus lizard have to help them climb rocks?

Awnsers:

A.strong claws

B.black color


C.flattened tail


D.webbed feet

Answers

Answer:

A) strong claws

Explanation:

cause if they werent strong they would break if they tried to climb the rocks... also the first guy said webbed feet cause there is a VERY SIMILAR question that asked how they could swim... its in the screenshot of what he was answering

The structural adaptation does the cristatus lizard have to help them climb rocks is strong claws.

Explain your answer briefly?

If they were not strong they would break if they tried to climb the rocks. Also the first guy said webbed feet cause there is a very similar question that asked how they could swim.

Thus, option "A" is correct, strong claws.

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A place where an organism resides based on the
suitability for its survival is

Answers

Answer:

Habitat

Explanation:

A Habitat is a place where an organism resides based on the suitability for its survival

"This leaf is 4 inches long."
What kind of observation is this?
A Quantitative
B. Qualitative
C Hypothetical
D. Inferential

Answers

The answer is A. Quantitative because Quantitative is observing amount, or quantity. Qualitative would be observing the quality, like color or shape. Hypothetical is making a hypothesis on the size, and finally inferential is would be saying you measured the leaf, I believe. A quick way to solve this would be to see if it involves numbers, and if so it’s a quantitative observation. If it involves color or shape or anything you observe with sight alone, it’s a qualitative observation. I hope this helps and sorry for the long answer, just trying to explain why A is correct.

HELP ASAPPPPP!!!!
A bat wing, an alligator leg, and a human arm are homologous structures.

Which fact about those structures best supports one aspect of theory of evolution?

The fact that the bone structures are similar supports the concept that birds evolved from mammals.
The fact that the bone structures are similar supports the concept that the animals shared a common ancestor.
The fact that the bone structures are completely different supports the concept that those organisms shared a common ancestor.

Answers

Answer:

The fact that the bone structures are similar supports the concept that the animals shared a common ancestor.

Explanation:

The similarity of the wings of bats, legs of alligators, and arms of humans in structure is an indication that animals shared a common ancestor according to the evolution theory.

Homologous organs are organs found in different organisms that are similar in structure but different in functionality.

The fact that these organs are similar to each other in morphological structure points to the fact that they might have evolved from the same ancestor according to evolutionists.

The wings of bats, legs of alligators, and arms of humans are all based on the same pentadactyl (five-digit) structure. However, a bat uses its wing to fly, alligators use their legs to crawl, while humans use their arms for a variety of purposes.

The homologous organ is one of the pieces of evidence used to support the evolution theory.

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Which resource is a renewable resource?
coal
gemstones
metal
trees

Answers

Answer:

Trees

Explanation:

I say this because you are able to replant trees, making them renewable.

Trees are classified into the category of renewable resources. Thus, the correct option is D.

What is a Renewable resource?

A renewable resource may be defined as an energy source that cannot be depleted and are able to supply a continuous source of clean energy.

Coal, gemstones, and metals are classified into the category of non-renewable resources because they can be depleted and do not available for longer times. They are utilized as time passes.

Therefore, the correct option for this question is D.

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what is one of the cause of mechanical weathering
A. acid rain
B. Oxidation
C.animal actions
D. Carbon

Answers

Animal actions is the best answer

it is a cause of mechanical weathering the actions of animals, their physical actions.

What is Physical Weathering?

Also called "mechanical weathering", it occurs through physical processes, with the fragmentation of rocks forming different types of sediments (eg sand). It is mainly influenced by temperature and pressure variation.

With this information, we can conclude that it is a cause of mechanical weathering the actions of animals, their physical actions.

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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.

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What is an igneous intrusion?

Answers

Answer:

Igneous intrusions form when magma cools and solidifies before it reaches the surface.

Explanation:

The temperature of the magma was dropped to low for it to continue moving and hardened where it was

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

Please help me, I have an F in biology and if I get a good grade on this test, I could pass!!

When the insects eat lichen, they are eating the sugar molecules that make
up the plant. The sugar molecule that stores the energy is called what?

Cellular Respiration
Carbon Dioxide
Photosynthesis
Glucose

Answers

Answer:

Glucose molecule

Explanation:

:)

Glucose

Hope this helps

Which is part of the theory of evolution by natural selection?

A. All animals in a population are able to reproduce.
B. Animals have no variation among themselves.
C. Adaptations cannot be passed along to later generations.
D. Small changes add up over many generations.

Answers

Answer:

D. Small changes add up over many generations.

Explanation:

It's not A because not all animals in a population can always reproduce. Some may be infertile.

It's not B because genetic variety is something that occurs naturally. Because of genetic variety, random mutations can occur (these mutations later become adaptations).

It's not C because adaptations can be passed down to later generations. These adaptations can lead to natural selection which eventually leads to evolution.

All viruses causes diseases and are called parasites True or False

Answers

Answer:False

Explanation:All viruses do not cause diseases,instead some are very beneficial,the help to prevent infections from the plague bacteria.But some viruses cause infectious diseases like HIV/AIDS,Ebola,Corona e.t.c and viruses are not called parasites because parasites are different from bacteria or viruses because their cells share many features with human cells and some parasites only replicate within a host organism but some multiply freely in the environment.

Which is one of the primary functions of food in the body

Answers

Answer:

What are the two primary functions of the food in the body? The food that we eat provides us with energy and nutrients which are used by the body for its growth, maintenance, and repair.

The food that we eat provides us with energy and nutrients which are used by the body for its growth, maintenance, and repair.

What are the 3 main functions of food?

The three functions of food are:

Nutrition absorption, Pleasing psychological requirement, and Physical .requirements

Thus,  are used by the body for its growth, maintenance, and repair.

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Use what you know about natural selection to fill in the blanks in the hypothesis. It should answer the lab question, “What is the effect of the type of food available on the frequency of different types of bird beaks?”

Hypothesis: If the type of food available changes, then…

…because…

Answers

Answer: The independent variable of the lab is the type of food that is available to the birds. The food type changes in a given environment, then the amount of each type of bird beak will changes as birds with beaks more suited to the available food will consume more successfully over time.

Explanation:

With the changes in the available food, the frequency of the beak type will also change as birds with beaks better suited to the available food become more successful.

What are different types of bird beaks?

There are many types of beaks in birds, some of these can be:

Crushing beak.Curved beak.Piercing and tearing beak.Birds of prey.Stickybeak.

With the changes in the available food, the frequency of the beak type will also change as birds with beaks better suited to the available food become more successful.

Thus, this is the hypothesis which support the given scenario.

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when your brakes fail, you should___.
a. shift to a higher gear
b. shift to a lower gear
c. not change your gear
d. alternate your gears

Answers

Answer:

d. alternate your gears

Explanation:

Answer:

D, “alternate your gears”.

Step-by-step explanation:

Three-year-old Mara jumped off the couch and injured her right tibia (lower leg bone). The emergency room nurse said she “broke her cartilage.” Mara's mother feels relieved that Mara didn't break her bone. Two years later, Mara seems to be limping and her mother notices that Mara's right leg appears shorter than her left. What happened to Mara

Answers

Answer:

Since the daughter is getting older and taller her cartilage is getting smaller.

Answer:

She dosnt have as much cartalige in one leg than the other

Explanation:

She has broken cartalige in one. not the other.

The act of doing what's best for the group is called
commensalism
O mutualism
altruism
symbiosis

Answers

The answer is altruism

What is the name of the substance that a transported sediment moves through?

A. Fluid
B Medium
C. Glacier
D. Erosion

Answers

Answer:

i think it be glacier ...............

The answer is erosion, I promise.

If carbon in the atmosphere increase will carbon on earth increase too?

Answers

Answer:

When carbon dioxide concentrations rise, air temperatures go up

When carbon dioxide concentrations rise, air temperatures go up, and more water vapor evaporates into the atmosphere—which then amplifies greenhouse heating.

How is glucose broken down in cellular respiration?

Answers

Answer: Glucose is broken down in the cytoplasm of the cell in a process called glycolysis. In stage two, the pyruvate molecules are transported into the mitochondria.

Explanation:

Glucose is broken down in cellular respiration into carbon dioxide and water.

What is cellular respiration?

Cellular respiration is a series of metabolic processes that take place inside cells to transform biochemical energy from meals into a substance known as adenosine triphosphate (ATP).

A glucose molecule gradually decomposes into carbon dioxide and water during cellular respiration. In the process of transforming glucose, some ATP is directly created. But far more ATP is later created through a procedure known as oxidative phosphorylation.

Glycolysis is the process by which glucose is metabolized in the cytoplasm of the cell. The pyruvate molecules are delivered to the mitochondria in stage two.

Therefore, during cellular respiration, glucose is converted to carbon dioxide and water.

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A scientist has sequenced a gene from a multicellular eukaryotic organism. Brendan claims that by analyzing the gene sequence and applying

the genetic code, he can conclude the sequence of amino acids in the protein that forms after the gene is transcribed and translated


Which statement provides the strongest evidence against the validity of Brendan's claim?


A. Regulatory proteins may activate or deactivate a gene, often by very complex mechanisms.




B. During transcription, a strand of mRNA is synthesized from complementary base pairs, with the substitution of uracil (U) for thymine

(T)




C. During translation, anticodons on tRNA bind to codons on mRNA as part of the process that forms the polypeptide.




D. After a gene is transcribed, introns are removed from the pre-mRNA to form the mRNA that is translated.

Answers

Answer:

D. After a gene is transcribed, introns are removed from the pre-mRNA to form the mRNA that is translated.

Explanation:

According to this question, a gene was sequenced by scientists from an eukaryotic organism. Brendan claims he can conclude the resulting protein after the transcription and trans of the gene.

It is true that transcription and translation are the processes that a gene undergo in order to be expressed i.e. produce protein. However, a gene sequence contains both the coding and non-coding regions in it. The coding regions code for a protein and are called EXONS in the mRNA while the non-coding regions do not encode proteins and are called INTRONS in the mRNA.

These introns are removed from the mRNA molecule that results from the transcription of a gene. The mRNA undergoes a process called SPLICING, which removes the non-coding part of the mRNA (introns) and joins the coding parts (exons).

Hence, if this occurs, Brendan will not be able to accurately conclude the resulting protein from that gene sequence because a portion of that gene will still be removed during SPLICING of post-transcriptional processing.

match the phylum with the animal.

Answers

Answer:

1 - D

2 - A

3 - C

4 - B

Explanation:

A red blood cell placed in distilled water will swell and burst due to the movement of Your answer: A.salt from the distilled water diffusing into the cell B.water molecules moving by osmosis into the cell C.water from the red blood cell moving into the distilled water

Answers

B is the correct answer

In each trial, you will add an indicator to the
mystery food sample. But you will also add the
indicator to a known substance and water. Why is
that important? Check all reasons.
to practice measuring volume using the
graduated pipette correctly
to match the mystery food sample to a definite
positive result (gelatin, oil, etc.)
to match the mystery food sample to a definite
negative result (water)
to increase the amount of data.
DONE

Answers

Answer:

to match the mystery food sample to a definite

positive result (gelatin, oil, etc.)

to match the mystery food sample to a definite

negative result (water)

An indicator is added to a known substance and water to match the mystery food sample to a definite

definitepositive result.

What are indicators?

Indicators are substances which produce specific color changes in the presence of particular substances and these color changes are used to identify the substances.

In the trials to identify the mystery food sample, an indicator is added to a known substance and water to match the mystery food sample to a definite

definitepositive result.

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Are pictures of relationships

Answers

Huh? Lol I don’t get the question

How are organisms in the domain Archaea different from those in the domain
Eukarya?
A. Archaea have DNA that is not in a nucleus.
B. Archaea have mitochondria inside their cells.
C. Archaea are multicellular organisms.
D. Archaea hold genetic information in DNA.
HELP ME ASAP

Answers

Answer:

A. Archaea have DNA that is not in a nucleus.

Explanation:

Archaea do not have a nucleus thus their DNA is in cytoplasm where as Eukarya have a full fledged nucleus

Answer:

A. Archaea have DNA that is not in a nucleus.

Explanation:

Eukaryotes are the organisms that have well defined membrane bound nucleus and other membrane bound organelles in their cells. The domain eukarya include both unicellular and multicellular organisms. Archaea include the unicellular prokaryotic organisms that lack the membrane bound nucleus and membrane bound organelles.

hope this helped!

Fast!!! Which is a FALSE statement about the blood that leaves the heart through the pulmonary artery? A. It is deoxygenated. B. It is transported to the lungs. C. It contains high levels of oxygen. D. It contains high levels of carbon dioxide.

Answers

Answer:

hope this helps

Explanation:

The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream. The pulmonary veins bring oxygen-rich blood to the left atrium. The aorta channels oxygen-rich blood to the body from the left ventricle.

When Engelmann exposed photosynthetic algae to light in the presence of aerobic bacteria, he found that some wavelengths of light produced a higher rate of photosynthesis, as evidenced by the number of bacteria gathered near the algae. Based on his results, what color of light did Engelmann find associated with the highest rate of photosynthesis?

A. Red and blue
B. Yellow and green
C. Yellow
D. Red

Answers

Answer:

A. Red and blue

Explanation:

Theodor Wilhelm Engelmann, born in 1843 and died in 1909, was a German scientist. He was the scientist who detected which wavelengths of light produced the best photosynthetic activity in green alga. In his experiment, Engelmann exposed the photosynthetic algae to different wavelengths in the light spectrum. He then added aerobic (oxygen-dependent) algae to see where they will accumulate the most in order to detect the best wavelength for algae photosynthesis.

He discovered that the aerobic bacteria accumulated in the parts of the algae exposed to red and blue wavelength of light. This is because the algae exposed to the red and blue light produced more oxygen due to increased photosynthetic rate. This attracted the aerobic bacteria, which needs oxygen, to that particular area with that wavelength.

Some students used information they gathered from lab investigations to prepare a table. They entered the table in their lab notebooks. Which of these correctly identifies the two cells described in the table? Your answer: A.Cell 1 is eukaryotic, and Cell 2 is prokaryotic. B.Both Cell 1 and Cell 2 are prokaryotic. C.Cell 1 is prokaryotic, and Cell 2 is eukaryotic.

Answers

Answer:Cell is eukaryotic

Explanation:

got it right

Answer:

C

Explanation:

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To better prepare for the ethical challenges of a global marketplace, you should broaden your cultural awareness and familiarize yourself with strategies that help you adhere to legal and ethical guidelines.Read the following passages.1. You have recently been told you are going on a business trip to Thailand. You want to schedule a meeting with your supervisor to discuss how she conducts business in an ethical manner while in Thailand. In order to prepare for the meeting, you make a list of questions you would like to ask.A. What is an example of a good question to ask in this meeting?B. What are the company policies when it comes to handling bribery?C. Is it customary in this country to take off your shoes before entering a home?D. What are the top three sights I should see?2. After solidifying an overseas deal with a large bottling company, the executive informs you that in order to expedite the signing of the materials, he will need an extra $10,000. 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