Environmental Science
A food web is

A set of interconnected food chains, illustrating the tropic relationships among species
The set of prey species that are consumed by animals in an ecosystem
The tropic (feeding) levels that can be observed in an ecosystem
Like a food chain

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Environmental Science
Ecology is

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

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