Which of the following relationships is parasitic in nature? a. a flea feeding on a dog b. a fish cleaning worms from a shark c. a ladybug eating the aphids (insects) on a plant d. two buzzards fighting over a dead animal

A. a flea feeding on a dog

Explanation:

A flea feeding on a dog is parasitic in nature considering a parasitic relationship, also known as parasitism, is between two organisms in which the parasite, lives on or in the other organism, the host, causing it some harm. The flea is the parasite and the dog is the host with the flea feeding on it causing harm.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.