The answer is B (speed up chemical reactions).
Answer:
If it is still maintained in the human population, hemoglobin Lepore must be selected for in evolution.
I believe it is C, but i cant be sure
I hope i helped a little :)
Answer:
its the deterioration of the environment through depletion of resources such as air, water and soil or in a more simple form: the destruction of ecosystems
Explanation: