Question

whale lice feed off the skin of great whales and other large mammals, often causing scarring to the skin. what type of interaction is this?
competition
mutualism
parasitism
predation

Explanation:

Parasitism is a symbiotic relationship where one organism (the parasite) benefits at the expense of another (the host). Whale lice feeding off whale skin and causing harm to the whale fits this definition. Competition is between organisms for resources. Mutualism is when both organisms benefit. Predation involves one organism killing and eating another.

Answer:

C. Parasitism