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
dimulka [17.4K]
3 years ago
6

How many times in the history of Earth has the number of species dropped drastically? A. four times B. three times C. five times

D. six times
Biology
2 answers:
strojnjashka [21]3 years ago
8 0

Answer:

Its 5 :)

Explanation:

i just took the test

olga2289 [7]3 years ago
7 0
I don't know if this is right but I think B: three times or its probably more than 3 times bc of these hurible people in this world!
You might be interested in
Which is present on the surface of red blood cells and determines bloody types?
Law Incorporation [45]
The correct answer is b, antigens
5 0
3 years ago
Read 2 more answers
Explain how gravity relates to tides.
iragen [17]

The gravity from the moon and some from the sun brings the tides up, because the moon's gravitational force is strong enough to pull some water up.

5 0
3 years ago
What is Asynchronous learning?
vlada-n [284]
Asynchronous Learning is when each student works at their own pace, and may not collaborate on work in class meetings, so the correct answer here would be D!
7 0
3 years ago
In what phase does DNA coil up and chromosomes become visible while the nuclear membrane is breaking down?
sweet [91]
This is the Prophase. 

<span>1) The chromosomes coil up and become visible while the nuclear envelope disappears. 
2) Sister chromatids are appears.
3) A centriole forms at each pole and spindle fibers made of microtubules grow out of it.
4) Short microtubules stick out from the centriole in a star shape known as an aster.

I don't remember liking biology but I do remember some things from it.</span>
7 0
3 years ago
Read 2 more answers
Describe how the behavior of prairie dogs secure the survival of their offspring.
Airida [17]
Prairie dogs create a safe home for their young by creating underground burrows.
3 0
4 years ago
Read 2 more answers
Other questions:
  • Through the course of evolution, plants have developed smaller gametophytes and larger sporophytes. Study the list of plants. Th
    12·1 answer
  • Chloride ions cannot move out of cells by simple diffusion.
    15·1 answer
  • Which laser listed below will allow you to detect all three insects listed below?
    13·1 answer
  • What happens to the shape of protein when the ATP binds to it
    7·1 answer
  • Plants that can live in water-soaked soil are able to survive in the _____________ ecosystem.
    14·1 answer
  • What is measured with an electric balance
    7·1 answer
  • Identify some geographical barriers that could separate populations.
    7·1 answer
  • Yellow seeds are dominant over green seeds. Two heterozygous yellow seeded pea plants are crossed. What percentage of the offspr
    11·1 answer
  • Phosphorous enters the biotic (living) cycle mostly by (hint: like water) *
    8·1 answer
  • Why do you want a small motor unit for fine motor skills?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!