Earth has a certain amount of water that's been circling the globe for _____

• dozens of years
• hundreds of years
• thousands of years
• millions of years

The vast majority of the world's water is _____

• in reservoirs
• in lakes and rivers
• in the ocean
• trapped in icebergs

The processes of evaporation, condensation and precipitation are part of _____

• the water cycle
• the hydrogen wheel
• the carbon circuit
• the liquid circle

Which process takes water from the surface of the ocean and turns it into water vapor?

• sublimation
• evaporation
• condensation
• precipitation

In general, water released from clouds is called _____

• sublimation
• evaporation
• condensation
• precipitation

Water is _____

• an unlimited resource in a closed system
• an unlimited resource in an open system
• a limited resource in a closed system
• a limited resource in an open system

By polluting, damming and overusing  it, we change our level of access to _____

• the ocean
• oil and natural gas
• land resources
• freshwater

Most importantly, we need access to freshwater for _____

• drinking
• keeping toilets running
• washing our cars
• keeping our lawns green

Southern California is at the end of which river?

• the Colorado River
• the Missouri River
• the Mississippi River
• the Rio Grande

Of the fruits, nuts, and vegetables grown in the United States, California produces ____

• nearly a quarter of them
• nearly half of them
• nearly three-quarters of them
• nearly all of them