Of the three terms biome, community, and ecosystem, which term contains the other two?

A biome is a community of plants and animals that have common characteristics for the environment they exist in. They can be found over a range of continents.

Community, also called biological community, in biology, an interacting group of various species in a common location. For example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.

An ecosystem is a community made up of living organisms and nonliving components such as air, water and mineral soil.