Environmental Science
Ecology is

The science that studies the evolution of life,
The study of the relationships between organisms and their environment
Integrates both social and natural sciences to help us understand how the earth works,
The study of the environment in the absence of humans

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Environmental Science
Definition of ecosystem is

The part of the earth and its atmosphere which inhibits living organisms
The abiotic component of a habitat
A community of organisms interacting with one another
The community of organisms together with the environment in which they live

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