This food web represents a community along the coast of alaska

The correct answer is option A.

Explanation:

A food chain displays how every living organism gets its food, and how energy and nutrients are transfer from one to another.

Food webs exhibit the relation between plants and animals connection in different ways. A food web is a natural interconnection of a food chain in an ecosystem.

Thus, only option that match with the picture that is plant eaten by rock ptarmigan eaten by a bald eagle that is option A.

a time line cause it goes from 685 to 978

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).