What is the primary function of the water cycle?

• To move water around the Earth

• To create new water

• To eliminate water pollution

• To increase water temperature

How many major watersheds are there in the continental United States?

• 78

• 50

• 100

• 25

What is the longest divide in North America?

• The Continental Divide

• The Appalachian Divide

• The Sierra Nevada Divide

• The Mississippi Divide

Why is groundwater important for plants and animals?

• It provides a source of water during dry periods

• It increases soil temperature

• It prevents soil erosion

• It creates new habitats

What can harm plants and animals in a watershed?

• Pollution in rivers and streams

• Excessive rainfall

• Natural evaporation

• High altitude