An environmental scientist might study the effect of soil pollution on plant growth. This is true.
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Answer:
The moon.
Explanation:
High tides and low tides are caused by the Moon. The Moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the Moon and the side farthest from the Moon.
Most saltwater-use is to generate electricity.
There are many ways today to generate electricity, and saltwater is one of those ways.