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APES CH 1

Across
The evolution of a new species
Derived from human activities
Number one cause of species extinction
One of the 3 main grains that provides a majority of calories
The variety of life forms in an environment
Down
Living in a way that allows humans to use resources without depriving future generations of those resources
Rocks, air, and water
The most common greenhouse gas
Contains biotic and abiotic factors
American species that was saved from extinction