As air moves away from the tropics and toward the poles, it becomes
a.) cool and dry
b.) cool and moist
c.) warm and dry
d.) warm and moist

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

In the practice of science, this type of reasoning is used to develop explanations.