Question

severe or sudden changes in earths atmosphere can cause entire species of animals to die. when all of the members of species die out, it is called
choose one option
a mutation.
b natural selection.
c extinction.
d revision.

Explanation:

• Mutation: A change in the DNA sequence of an organism. It does not mean the death of all members of a species.
• Natural selection: The process by which organisms better adapted to their environment tend to survive and reproduce more successfully. It is about the survival and reproduction of some members, not the death of all.
• Extinction: When all members of a species die out. This matches the description in the question.
• Revision: This term is not related to the death of all members of a species in a biological context.

Answer:

C. extinction.