Environmental Science
Frost typically forms on the inside of a windowpane (rather than the outside) because:

The inside of the pane is colder than the outside
There is more water vapor touching the inside of the pane
None of these
There is less water vapor touching the inside of the pane

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Environmental Science
A food web is

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

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Environmental Science
Thermal belts are:

Warmer hillsides that are less likely to experience freezing conditions
Pockets of warm air resting on a valley during the afternoon
Pockets of cold air resting on a valley floor at night
Cold, below-freezing air found at the top of a mountain

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