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INTRO to ECOLOGY

Across
The role an organism plays in its environment
The study of interaction between living and non-living things
Closely related organisms
Having clean drinking water and proper sewage disposal
Removing a large area of trees
A natural resource that can be replaced
Non-Living
Down
Living
Where an organism lives
Producing materials not wanted, needed and may be harmful to the environment
Type of fuel formed from the remains of once living things
Growing crops and raising animals
Harmful substance put into the environment
When a species no longer exists
Made by humans and not by nature