Which organisms belong to more than one food chain, a snake, bird, frog, insect, or plant

Does masterbation affect height growth or loss of growth hormone?

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates