Why is Earth in constant motion? A. It has big bodies of water. B. It is broken into big plates. C. It is being pulled by gravity. D. It lies on top of the liquid part of the mantle.

B. It is broken into big plates.

Explanation:

There are plates constantly moving which is how mountains, earthquakes and volcanoes are formed.

answer; i believe that one of the correct answers is preventing human development;

within these regions are all the major types of biomes in the world. a biome is a community of animals and plants spreading over an extensive area with a relatively uniform climate. some diverse biomes represented in north america include desert, grassland, tundra, and coral reefs.