1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MrRa [10]
3 years ago
8

Why are Polar bears are much larger than American black bears

Biology
1 answer:
Alika [10]3 years ago
7 0
This is because of natural selection; since polar bears live in a rough environment, natural selection gives them more fur, more muscle, and can go longer without food
You might be interested in
Lipid is one of the major classes of biomolecules needed by the body. The body breaks down the lipids that we consume to create
Darina [25.2K]
So the breakdown of lipids actually starts in the mouth. Your saliva has this little enzyme called lingual lipase, which breaks down these fats into something called diglycerides. These diglycyerides then make there way to the intestines, where they stimulate the pancreas to release lipase (another fat breaking enzyme!) and the pancreas to release bile. The bile and pancreatic juices both work together to break these diglycerides into fatty acids. It’s helpful to know some of the root words. Glycerol- the framework to which the fatty acids stick. Glyceride- think of this guy as several fatty acids stuck to a glycerol. Lipids- think fats, and their derivatives (our glyceride friends.) tri/di/mono- these are just number prefixes! Lipids are one glycerol molecule, and then either one, two, or three fatty acids attached, which is where you get mono(1)/di(2)/tri(3)glyceride from. I know this was long, but hopefully it helps!
5 0
3 years ago
Mercury, Venus, Earth, and Mars are considered __________ planets because they all __________.
34kurt
I'm almost 100% it is the first option
3 0
3 years ago
What role does the overproduction of organisms play in natural selection?
Nonamiya [84]
They could look for similarities in the DNA or protein structuresof the organisms<span> and similarities in early development</span>
6 0
3 years ago
Edit: Nevermind! I figured it out!!
Montano1993 [528]

Answer:

meteorite 1- 2.6 billion

meteorite 2- 5.2 billion

meteorite 3- 3.9 billion

5 0
3 years ago
Read 2 more answers
Please no links or files or I will report
sattari [20]

Answer:

C

Explanation:

The moon revovles around the sun. While the moon goes around the earth, some half of the moon will be lighted up by the sun. The other side will always be in darkness. Hope this helps :)

6 0
3 years ago
Read 2 more answers
Other questions:
  • Although all elements comprising a hazard warning label are important, the least important element is the label's _____.
    9·1 answer
  • What is the difference between prokaryotic and eukaryotic cells?
    14·2 answers
  • Can a nerve cell be found in the g0 phase
    8·1 answer
  • 3. Which of the following undergoes change during a chemical reaction? (1 point)
    11·1 answer
  • Like all enzymes, restriction endonucleases (REs) need to be handled very carefully to ensure that they do not denature. Which o
    8·1 answer
  • My fish its not so active all the time and im worried about him.. what shoud i do?
    6·1 answer
  • Is it safe to use it
    12·1 answer
  • Plate tectonic theory states that: *
    11·1 answer
  • In ____________ , a double-stranded RNA molecule separates into single strands. One of the strands prevents a complementary mRNA
    5·1 answer
  • Question:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!