The Basics of Freshwater

Front

To keep on living, all living things need _____

Back

some form of water

Front

How much of the surface of the Earth is covered in water?

Back

more than two-thirds

Front

We actually have enough water on Earth to leave a faucet running for _____

Back

136 trillion years

Front

Most of the water on earth is _____

Back

in the oceans

Front

What kind of water is found in rivers, ponds, wetlands, and streams?

Back

fresh water

Front

Freshwater contains _____

Back

less than 0.1% salt

Front

Which field of science deals with the Earth's surface? Options: biology, astronomy, geography, archaeology

Back

geography

Front

On a map of the Earth, most of the blue stuff represents _____

Back

salt water

Front

What percent of the water on the planet is salty? Options: less than 95%, about 95%, about 97%, more than 97%

Back

about 97%

Front

What percent of the planet's total water supply is freshwater? Options: less than 3%, about 3%, about 5%, more than 5%

Back

about 3%