Please what is biology?

Biology is the study of life and living things.

Explanation:

Bio means "life" and ology means "the study of"

Biology is another form of science, but it is more advanced. It has to to with things like chemicals, H20, and many more. You will start doing biology whenever you start getting into higher classes like 7th all the way to college, or even if you are trying to be a scientist or doctor. I hope this helps and if you have any further question, comments down below.

I am glad to assist you!

~Jarvis

Explanation:

the right option is; decreased genetic variation  

decreased genetic variation describes the effect of this environmental change.

genetic variation is the naturally occurring genetic diversities or differences between organisms of the same species in a population. genetic variation allows the survival and adaptability of a species when they encounter changing environmental conditions. when an endangered species reduces, it loses genetic variation which may not be restored even if the species rebound and will only be recovered through the gradual collection of mutations over many years.