Environmental Science
Frost forms when:

All of these
Objects on the ground cool below the dew point temperature.
The dew point is 32oF or below.
Water vapor changes into ice without first becoming a liquid.

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Environmental Science
Ecology is

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

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