The Basics of Freshwater

What do all living things need to survive?

• Sunlight

• Air

• Water

• Soil

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Why can't humans drink saltwater?

• It's not available in most places

• It has too much salt for our bodies to process

• It contains harmful bacteria

• It's too cold

Why is freshwater so important?

• It's used in industrial processes

• It's a source of entertainment

• It's necessary for all forms of life

• It's used for transportation

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What do geographers use to study Earth's physical features?

• Telescopes

• Microscopes

• Maps

• Satellites

What percentage of Earth's water is freshwater?

• About 97%

• About 3%

• Less than 1%

• More than 50%

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Where is most of the Earth's freshwater found?

• In the oceans

• Locked in glaciers

• In rivers and lakes

• In underground aquifers

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How much of Earth's freshwater is accessible for use?

• More than 75%

• About 50%

• About 25%

• Less than 1%

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Which lakes hold about 20% of Earth's available freshwater?

• The Great Lakes

• The Caspian Sea

• Lake Baikal

• Lake Victoria

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What is the main source of freshwater for humans?

• Bottled water

• Rainwater

• Glaciers

• Rivers and lakes

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How do people adapt if they don't live near a freshwater source?

• They move to a new location

• They adapt their environment to bring water to them

• They only drink bottled water

• They reduce their water usage

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