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Earth Day Quiz Answers

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(CNN Student News) -- Click here to access the related Earth Day Quiz.

1. B. 50 gallons

Fact: The United States consumes water at twice the rate of other industrialized nations

2. C. 50-70 percent

Fact: To save water, experts recommend never watering at the hottest times of the day or when it's windy.

3. A. 1 percent

Fact: Nearly 97 percent of the world's water is salty or otherwise undrinkable. Another 2 percent is locked in ice caps and glaciers.

4. B. 8,000 sheets

Fact: According to the group Conservatree, one tree makes 16.67 reams (one ream = 500 sheets) of copy paper or 8,333.3 sheets.

5. C. 10-minute shower

Fact: The shower uses 30-50 gallons of water; flushing the toilet uses 2-7 gallons; filling the bathtub uses 25-30 gallons; washing one load of clothes uses 25-40 gallons.

6. C. One week

Fact: A person can live about a month without food but can live only about one week without water.

7. D. Plastic 6-pack holder

Fact: It takes 450 years for a plastic 6-pack holder to disintegrate.

8. B. Paper

Fact: Every year, enough paper is thrown away to make a 12'-high wall stretching from New York to California.

9. D. Water heater

Fact: The water heater uses approximately 4,000 watts, more than double of any of the other appliances.

10. A. Heating and cooling

Fact: Heating and cooling accounts for 49 percent; the clothes washer and dryer for 6 percent; electronics for 7 percent; a refrigerator for 5 percent.

11. B. Natural gas

Fact: Natural gas is a type of fossil fuel and is a nonrenewable resource; once it is used, it can't easily be replenished.

12. C. Carbon dioxide

Fact: According to the EPA, the U.S. pumps more carbon dioxide into the atmosphere than any other country in the world. Each U.S. resident contributes about 22 tons of carbon dioxide emissions per year, whereas the world average per capita is about 6 tons.

13. D. National Wash-Your-Car Day

Fact: The first Earth Day in 1970 also led to the creation of the United States Environmental Protection Agency (EPA).

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