ecosystem

community of organisms and surroundings

Root

eco / oik: house, home, habitat

Other words with the eco / oik root

ecology: study of organisms and environment
economic: related to resources or the economy
economics: study of production and resources
economist: expert in economics
economize: to use resources sparingly
economy: system of production and consumption

An ecosystem is a living home-system: creatures and surroundings working together.

Removing one insect changed the whole forest ecosystem.

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