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
umka2103 [35]
3 years ago
15

How did black bears become so diverse over time?

Biology
1 answer:
serious [3.7K]3 years ago
8 0

Answer: They evolved from the same line as the cave bear, descending from Ursus abstrusus, a small, primitive black bear. Ursus Euarctos, a black bear, came to North America during the Pliocene Epoch before the brown bear.

You might be interested in
How are proteins distinguished from each other?
ludmilkaskok [199]
Different combinations of amino acids give different properties to proteins. Therefore, the main feature that should be used in distinguishing proteins from each other is the amino acid sequence of proteins. However, proteins can be distinguished by their size and the biochemical properties as well.
7 0
3 years ago
Read 2 more answers
A system that exchanges energy with its surroundings is called ___
Alex_Xolod [135]
The answer is an open system
6 0
3 years ago
Which best describes the reliability of her work? It is unreliable because it is on the Internet. It is unreliable because it of
Fiesta28 [93]
Any information provided has to be factual, not opinionated, to be reliable.
with this being said, the second choice would be the reason why her work is not reliable
3 0
3 years ago
Read 2 more answers
Use the following words in a sentence (seperatley please)- volume, and meniscus.
QveST [7]
Volume - the amount of something in a three-dimensional area.
Meniscus - the curve that a liquid makes at the surface from surface tension.

I measured the volume of water in the container.

The water formed a meniscus near the top of the container.
4 0
3 years ago
Difference between archaegonia and anthredia
Thepotemich [5.8K]
Antheridia- is reproductive that produces MALE gametes. AND

Archegonia- is reproductive that produces LADIES gametes
8 0
3 years ago
Other questions:
  • "in which area does apoptosis play an important role"
    10·1 answer
  • What causes an annular eclipse?
    15·1 answer
  • Adaptive evolution is a permanent change in a trait.
    11·1 answer
  • What do enzymes to the rate of reaction
    13·1 answer
  • Pencillin is isolated from
    6·2 answers
  • Please i want the answer and explanation , explanation is needed​
    7·1 answer
  • Which of these best defines a species?
    7·1 answer
  • Que tipo de reproduccion utilizan las mariposas monarca
    12·1 answer
  • If you have built up a static electric charge on your skin it is likely to discharge when you touch something metal?
    5·2 answers
  • Which statement best describes the result of meiosis?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!