What is a region of hot slow flowing solid rock between the core and the crust?

This region is called the mantle. it's the movement of matter that results from differences in density caused by variations in temperature

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.

the answer is b. hope this !