Question

which interaction harms one species but benefits the other? *
parasitism
commensalism
mutualism
predation

Explanation:

Parasitism is a symbiotic relationship where one organism (the parasite) benefits at the expense of another (the host), harming the host. Commensalism is when one species benefits and the other is neither helped nor harmed. Mutualism is where both species benefit. Predation involves one organism killing and eating another, which is a more extreme form of harm - but parasitism specifically refers to a long - term relationship where the host is usually not killed immediately.

Answer:

Parasitism