Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
The percentage of alleles for homozygous recessive would be 50%
The question is asking the determine the role that the United States do in the ecosystem base on the passage and situation in the question that you have state, base on my research, I would say that its role is a Dominant. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification
Papaya has papin which tenderizes hastening cooking process