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

Question 2: Which of the following share the most recent common ancestor with the polar bear?

A. The Giant Panda


B. The Sloth Bear


C. The Raccoon


D. Lesser Panda

Answers

Answer 1

Answer:

d,a

Explanation:


Related Questions

5
The outermost layer of the sun is called the
corona
chromosphere
ionosphere
photosphere

Answers

Photosphere is the answer.


what is a drawback to hydroelectric power?
A. fish being isolated on one side of the dam
B. water in the reservoir becomes warm
C. increases the dissolved oxygen
D. Increases the rate of nutrient flow downstream

Answers

Pretty sure it’s A fish are isolated for hydroelectric power

Please help with this science question!!

Answers

Answer:

the body temperature of the fish would increase

Explanation:

Since fish can not increase or decrease their body temperature at will, their body temperature will be determined by the temperature of the surrounding water.

what is the least amount of time you should stay in your target heart rate

Answers

Answer:

Aim to be at your THR for at least 15 to 20 minutes workout time, and ideally 35 to 45 minutes. If you're a beginner, start at 65 percent to 70 percent of your maximum heart rate and gradually increase the intensity.

Hope this helped...

Jane has a beaker containing a clear solution. She adds a liquid pH indicator to the clear solution and observes that the solution changes to bright blue. The clear solution in the beaker must be a(an)

Answers

Answer: a (weak) acid

Explanation: the solutions are mostly neutral but the pH shown by the indicator as a bright blue means it is slightly acidic meaning the pH is between 6 and 7.6

As the solution turns bright blue on addition of indicator, the solution in beaker must be a weak base.

What is a base?

According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.

Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.

They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.

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Are people with hypertension more likely to get infected with the coronavirus than people who are healthy?
Yes or no?

Answers

Yes because they have an underlying disease which affects their body in a negative way
Yes because they would have a weaker immune system

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

Answers

The answer is altruism

Most of the costs associated with using renewable resources are due to _______.
a.
overuse of resources
b.
atmospheric pollution
c.
lack of availability
d.
global warming


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

A

Explanation:

When we overuse resources, even when the are renewable, it can cause damadge to them that can't be repaires. Like killing too many trees in a forest.

Answer:

A

Explanation:

Use the information from lecture and lab powerpoints and the textbook to determine which part of the
endocrine system could be experiencing problems in the scenarios below. List some other information
that could confirm or rule out your initial diagnosis (tests you might be able to run or questions to ask
the patient or relatives). Explain your reasoning.
1.
A 27 year old female enters the clinic complaining of fatigue, fluid retention (especially in
her face), and a cold that she just cannot kick. She is studying for her midterms (she is a first
year physician's assistant student) and her roommate finally convinced her to come in;
because she is always sick and always grumpy.​

Answers

Answer:

This woman is likely to be hypothyroid.

Explanation:

The woman has symptoms that may be linked to hypothyroidism, which occurs when the thyroid produces little hormone

thyroid. This disease is more common in women than in men and can be very debilitating if not properly cared for.

The doctor who will assist the woman shown in the question above, should ask questions about what she is feeling and see if she has low immunity, weight gain (in addition to fluid retention), feeling cold, mental depression, menstrual irregularities and constipation .

Finally, the doctor must order a blood test to see if the levels of thyroid stimulating hormone (TSH) and thyroid hormone (T4) are adequate and thus to confirm or not the disease.

Think of another science topic you studied earlier. How does that topic connect to what we are learning about carbon and energy in ecosystems? Be creative! Consider how carbon in ecosystems might affect or be affected by molecules, energy, forces, Earth—either its atmosphere or oceans.

Answers

Answer:

ecosystems might affect or be affected by molecules, energy, forces, Earth—either its atmosphere or oceans.ecosystems might affect or be affected by molecules, energy, forces, Earth—either its atmosphere or oceans.

Explanation:

ecosystems might affect or be affected by molecules, energy, forces, Earth—either its atmosphere or oceans.

In the United States, the moon’s pull is strongest during which season?
1. spring
2. summer
3. fall
4. winter

Answers

Answer: Spring

Explanation:

Gravitational pull is affected by mass and distance. Since the moon’s mass does not change, the moon’s distance between Earth and the moon is the main consideration for the strength of lunar gravity. The moon’s pull on Earth waxes and wanes as the moon follows its elliptical orbit around the Earth, the distance between the two celestial objects increases and decreases. When they are nearest to each other, the moon is in the point of its orbit called the perigee, and its pull on Earth is the strongest.

On Earth, the moon’s gravity primarily is manifested as high and low tides, as the water bulges toward the moon. The effects of lunar gravity are felt the most at the constantly changing spot on Earth that is directly beneath the moon, called the sub-lunar point. At most times of the year, the moon has a greater pull on Earth than the sun does, but this changes during the times of year when the Earth’s orbit brings it closer to the sun. At these times, the sun’s gravitational pull causes spring tides, and when these coincide with the moon’s orbital perigee around the Earth, they are called perigean spring tides.

Earth exerts a gravitational pull on the moon 80 times stronger than the moon’s pull on the Earth. Over a very long time, the moon’s rotations created fiction with the Earth’s tugging back, until the moon’s orbit and rotational locked with Earth. This is called "tidal locking," and it explains why the same side of the moon always faces the Earth.    

Answer:  The correct answer is 1. spring

Explanation:  Confirmed correct.

Which two hypotheses can be supported with quantitative data?

Answers

Answer:

People who eat low-protein diets are more likely to have less muscle mass.

Eating less salt lowers blood pressure over time.

Minerals that contain the elements silicon and oxygen are called. A. halides
B. oxides
C. silicates
D. carbonates

Answers

Answer:

C

Explanation:

They mostly contain silicon and are bonded by oxygen

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

Fill in the blank. Bacteria of viruses can cause ----------- diseases. Which are increasing in occurrences geographic area, or both

Answers

The answers is infectious

8. Ligaments are strips of tough tissue that
support soft tissues inside bones
prevent friction between bones
connect bones to bones
attach muscles to bones

Answers

Answer: C

Explanation:

Ligaments are strips of tough tissues that serves as connective tissue for two or more bones and cartilages. These also holds the joints together.

Ligaments are strips of tough tissue that connect bones to bones; that is the third option because the bones that are present in the body are connected to each other with the help of the ligaments.

What is the significance of the ligament?

Ligaments are significant for many different factors, such as that they have an important role in physical activities such as sports and maintain optimal performance and injury prevention as they have a rich blood supply. They have an important role in preventing injuries to joints and bones as they protect bones and cartilage from excessive stress and connect bones to bones.

Hence, ligaments  are strips of tough tissue that connect bones to bones; that is the third option because the bones that are present in the body are connected to each other with the help of the ligaments.

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n
Both weathering and erosion produce
а. sediment
b. carbon dioxide
C. mass movement
d. igneous rocks

Answers

A. Sediment

Both weathering and erosion produce sediment
Weathering, by definition, is the physical integration and chemical decomposition of earth materials at or near the earth’s surface. Erosion, by definition, is the gradual destruction of something by natural forces (e.g. water, wind, ice). Therefore, the characteristic of both weathering and erosion is that it occurs naturally.

The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of water into and out of the cell in an aquatic environement. What condtions cause the contracile vacuole to fill with water? Your answer: A.The concentration of water is greater outside the cell than inside the cell. B.The concentration of water inside the cell is the same as the concentration outside the cell. C.The temperature of water in the vacuole is higher than the temperature of its environment.

Answers

A. The concentration of water should be higher on the outside because it allows water to slow into the cell to balance the concentration.

Do humans reproduce asexually or sexually?​

Answers

Sexually because human need to have sex in order to create a child in their bodies
Sexually because it’s true

which statement about enzymes is true an enzyme functions to increase the activation energy and reaction enzymes are proteins that function as catalyst in nonliving things each enzyme catalyze many different bio chemical reactions enzymes and substrates fit together like a lock and key

Answers

Answer:dirnk energy drinks

Explanation:i hate this

What science aims to discover solutions to practical problems?

Answers

Answer:

The aim of applied science is to find solutions to practical problems

The aim of applied science is to find solutions to practical problems or  science aims to discover solutions to practical problems.

What is natural science?

Natural science is the branch of science that deals with the study of natural events, based on experimental proof from research and experimentation. Earth and space science is the study of the Earth, oceans, land, solar system and atmosphere. it covers all fields of the natural science that are associated with the Earth planet.

Life science is the life sciences include the parts of science that include the scientific understanding of living organisms and life( plants, animals , microbes and human beings and physical science as it deals with studies of non-livings things.

Knowledge management approach focuses on making best use of the knowledge with the intent of achieving organisational objectives. It involves discovering, sharing and harnessing of the intellectual resources that a company holds.

Therefore, The aim of applied science is to find solutions to practical problems or  science aims to discover solutions to practical problems.

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How far apart are Y and B?

Answers

Answer:

about 23 letters apart

Explanation:

During any type of mineral growth, atoms accumulate on
A. ions
B. native elements
C. silicates
D. crystal faces

Answers

I think it’s silicates If you get it wrong just use the app Socratic

Answer:

crystal faces

Explanation:

interference competition
Define

Answers

Answer:

the competition between organisms is direct.

Explanation:

An example is the aggression display between competing organisms. This applies to both intraspecific and interspecific competition. In intraspecific competition, the competing organisms are of the same species.

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:

To push a heavy box up a ramp into a moving van, what could be used to
decrease the force of friction?
Check all that apply.
O A. Place rollers or wheels on the bottom of the box.
O B. Place another box on top of the one you are trying to slide.
0 C. Push harder on the box.
I D. Put a lubricant between the ramp and the box.
*THERE IS MORE THAN ONE ANSWER *

Answers

Answer:

I would say A. and D.

Explanation:

These 2 options can help decrease the force of friction.

The answer is D I think

Which product of cellular respi tion is used by the human body for energy?
O oxygen
Ο ΑΤΡ
O sunlight
O CO2​

Answers

Answer:

The answer is option 2.

Explanation:

ATP is the main product of cellular respiration.

How are nerve cells adapted to carry electrical messages?

Answers

Answer:

"The axon, the long, thin part of the neurone along which the impulse passes, is covered in a fatty myelin sheath, which acts as an electrical insulator."

Explanation:

"The dendrites receive incoming nerve impulses from other neurons."

What factor contributes to cultural and environmental degradation ?

Answers

Answer:

Diffusion I think

Explanation:

not sure, hope it helps

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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