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
Pepsi [2]
3 years ago
12

Which life-form existed on Earth for the shortest period of time?

Biology
2 answers:
Elza [17]3 years ago
7 0

Answer:

The dinosaurs existed on Earth for the shortest period of time.

Explanation:

I promise...

vovangra [49]3 years ago
3 0

Answer:placoderm fish

Explanation:I was taking a test and that was the answer

You might be interested in
How does the immune system recognize its own body’s cells?
soldi70 [24.7K]
<span> </span>Most cells of the body have self markers on the surface of their cell called the major histocompatibility complex (MHC). The MHC allows cells of the immune system to recognize the cell as part of our self.<span>system to recognize the cell as part of ourself.</span>
7 0
3 years ago
During an anatomical class, Dr. Hales removes the heart of a frog and places it in a beaker of oxygenated Ringer's solution. He
Furkat [3]

Answer:

Autorhythmicity of the heart

Explanation:

It is the study of the characteristics features of the cardiac muscle cells with the ability to initiate action potential at certain level without connection to any external stimulus which the heart beats constantly and rhythmically. Cardiac muscle cells controls the rate of contraction of heartbeats.

5 0
3 years ago
Read 2 more answers
Imagine a locus with two alleles. Mutation at this locus changes one allele to the other (i.e. it does not create a new allele).
bixtya [17]

Answer: okay

Explanation:

6 0
2 years ago
Which parts of the country are experiencing low pressure
Lelechka [254]
Low pressure like Alaska Montana and other cold parts<span />
6 0
3 years ago
PLEASE ITS DUE TOMORROW<br> what are the 6 summaries of the heliocentric model?
Arisa [49]

Answer:

The Foundations of the Copernican

Revolution

1. Earth is not at the center of everything.

2. Center of Earth is the center of Moon’s orbit.

3. All planets revolve around the Sun.

- but still in circular orbits

4. Earth is just one of the Planets.

5. The stars are very much farther away than the

Sun.

6. The apparent motion of the Sun and stars is due

to Earth’s rotation around itself

5 0
3 years ago
Other questions:
  • Gomphoses are among the most common joints in the body. <br> a. True <br> b. False
    6·1 answer
  • The brain dysfunction where blood supply to a region (or regions) of the brain is blocked and vital brain tissue dies, as by a b
    11·2 answers
  • What are some examples of producers? Why are they called autotrophs?
    6·2 answers
  • What is the equation for photosynthesis ~ Branliest
    8·2 answers
  • I need help i dont understand
    13·2 answers
  • Summarize how the actions of the heartbeat make their first and second sounds.
    13·1 answer
  • The following table describes several molecules and their functions. The molecules all belong to the same class.
    6·2 answers
  • A level in an energy pyramid is called a _______ level
    12·1 answer
  • Which belongs in each place
    10·1 answer
  • (GIVING BRAINLIEST!!!)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!