Please help me with this question: Grizzly bears and polar bears are very closely related, so much so that they can reproduce to form hybrid offspring. Use your understanding of natural selection to describe how polar bears became a separate classification from the grizzly.

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.

a bird that nests only in a particular tree species.

well this my answer.

releases oxygen is a light-independent reaction and so is (fixes carbon dioxide. light-dependent reaction takes place in the stroma and lights dependent reaction take place in the grana, light-dependent reactions produce atp. and last but not least, light dependent reactions produces glucose.

hope it : )