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Ecosystems Vocab

Across
All organisms of the same species living in an environment.
Study of interactions among organisms.
Factor: A nonliving factor.
An organism that helps break down organic material.
A geographic area on Earth that contains ecosystems.
All the living and nonliving parts of an environment.
All the populations living together in an environment.
Down
Shows one feeding relationship in an ecosystem.
An organism that produces its own food.
The gradual change from one community to another community.
Any variation that makes an organism better suited for its environment.
Shows all the possible feeding relationships in an ecosystem.
An organism that eats other organisms for food.
Factor: A living factor.
Pyramid: A model that shows the amount of energy in food chains.
Place where an organism lives.