<span>Mutation cannot be predicted and research cannot determine when mutations will occur. However, natural selection indicates that species with the strongest traits will multiply more and live longer than their weaker counterparts. Therefore natural selection is systematic and predictable.</span>
Answer:
B
Explanation:
i am sorry if this is wrong
Answer:
The answer is B.
Explanation:
The United States has been progressively expanding towards the southwest since the start of the country.