What happened to all of earth's continents as the paleozoic era came to a close?

a. they split in half
b. they fused into pangaea
c. they formed gondwana
d. they moved toward the poles (north and south)

in : )

Relatively steep zone that is compared with the shelf that marks the boundary between continental crust and ocean crust.

Use your vocabulary words to complete the sentences below. more of the world's population is now concentrated in heavily populated urban areas known as a this is quite a contrast from the past when or native groups were either farmers or — hunters and gatherers who moved between places in search of food. advanced technology has led to the integration of world economics and cultures, in the world's more developed countries. this integration requires , the responsible use and management of natural resources.

Mosses, lichens and shrubs can be found where in russia? a.grasslands b.mountain regions c.coastal plains d.siberian tundra