Please answer this ill give the brain thing but i need a answer QUICK!

Nteractions between organisms and their environment impact the organism’s overall population. oahu amakihi and kauai amakihi are two closely related species of hawaiian honeycreepers. they have a common ancestor, eat small insects and nectar, and like to nest in koa trees. however, one species is found on the island of oahu, and the other is found on the island of kauai. which concept shows the relationship between oahu amakihi and kauai amakihi?

Which of the following claims does the author support the least

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?