Biosphere - The layer of earth that supports life., Ecosystem - A community of living organisms interacting together with their non-living factors., Community - Different populations living in the same place at the same time., Biotic - Relating to the living organisms in an ecosystem., Abiotic - All of the non-living components of an ecosystem., Population - A group of the same species living in the same place at the same time., Habitat - The place where a population of an organism lives., Pollination - The transfer from the male parts of flowers to the female parts of other flowers., Decomposer - An organism that gains nutrients by breaking down dead organisms into simpler nutrients., Scavenger - An animal that feeds on dead organisms, rather than hunting for prey., Hydrosphere - The combined mass of water found on, under, and above the surface of a planet, lithosphere - The rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle., Atmosphere - The layers of gases surrounding a planet.,

Ecosystems introduction

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