Explain how purine-pyrimidine pairing keeps the dna strands at the same distance

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?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

In which layer do organisms on earth love?