Corn was first brought to Europe by Christopher Columbus. Within 100 years it had spread through most of the Eastern Hemisphere. Which conclusion is supported by this information?

Adesert is an example of a(n) and the gobi desert is an example of a(n) a. ecosystem biome b. biome ecosystem c. ecosystem climate d. climate biome

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

Fill in the combination notes for the main idea shown