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The place where an organism lives and that provides the things the organism needs


All the living and nonliving things that interact in an area

Biotic Factors

Living parts of an ecosystem like grass, plants, seeds or berries

Abiotic Factors

Nonliving parts in an ecosystem like water, sunlight, oxygen, temperature and soil


All the members of a species in a particular area

Levels of Ecological Organization

1- Organism: one individual 2- Population:many individuals of same species 3- Community: many populations 4- Ecosystem: community and nonliving factors


The study of how living things interact with each other and with their enviroment


A living thing


A group of organisms that are physically similar and can mate with each other and produce offspring


All the different populations that live together in an area

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