B. They decrease. As more we use the sources of nature, the less is left.
You could have made sure the books were the same weight and your friends could have done it at the same time as you
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.
