Environmental Science
The north-facing side of a hill in a mountainous region in the US tends to:

Have snow on the ground for a longer period of time in winter compared to the south-facing side
Be a better location for a ski run than the south-facing side
All of these
Receive less sunlight during a year than the south-facing side
Grow a variety of trees that are typically observed at higher elevation

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Environmental Science
Ecology is

The study of the relationships between organisms and their environment
The science that studies the evolution of life,
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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