Answer:
mutation, recombination, and immigration of genes.
What are the answer choices!
The answer would be between b and d but i would go with d
I'm almost sure your answer is going to be "Because the sun's mass creates a gravitational force that pulls earth towards it."
correct me if I am wrong.
Answer:
Virus.
Explanation:
Viruses can't reproduce without invading the cell of another living being.
