Answer: D. Fossil Record
Hope
this is correct!!
The answer is D
Explanation:
I apologise for the late answer, but D would be the best one, as it does not discuss morality or anything differing from person to person. The effect it has on birds however, can be readily studied using the scientific method.
1) A. Located in an enzyme
2) C. Synthesis of polymers from monomers
You're all good!
Because they only pull not push and we need something to push