An interaction between two organisms in which
one usually benefits is known as

did u get the answer? /? ? / me

i think that it is plants

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.

the answer is d p: cell, q: organ, r: organ system, s: tissue