Mutualism, benefits both organisms.

Commensalism, benefits one organism as the other is not harmed.

Paratalism and parasites, get nutrients as you suffer.

Niche, is what I do to keep myself a going.

Community, and ecosystem is the population of you and me.

Decomposers, eats the animals that have died to keep the Earth clean.

Host, is a animal that provides food for parasites.

Niche, is what the animal has to do to live.

Diversity, is the different animals in one area.

Adaptation, is what an animal does physically to live in the type of area it lives in.