The answer is c. Living organisms modify their environment a little at a time.
The purpose of succession is for an ecosystem to reach balance state right after it is formed or after it is disturbed by man or some disasters. It will increase biodiversity and help to prevent the desertification. Living organisms modify environment a little at a time. By modifying it, they make the environment more suitable for the new species to enter the community.
Answer:A Homozygous means both alleles are the same. This leaves A and B Only choice A has heterozygous(different) alleles for offspring,so it is the right answer
