Environmental Science
The deepest radiation inversion would be observed:

On a desert in winter
In polar regions in winter
At the equator any day of the year
At the top of a high mountain in winter
In a deep valley during the summer

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Environmental Science
A food web is

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

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