I believe the answer is D. the green revolution was instrumental in the increase of the world's food supply, but I may be wrong because it does have some negatives.
Answer:
The answer to this question is D.All of these.
Explanation:
Molecules contain two or more atoms and are held together by covalent bonds, whereas compounds are held together by ionic bonds. Two or more elements bonded together through ionic attraction.
Mutation is the only evolutionary mechanism that does little to change allele frequencies.