Exploring Freshwater Ecosystem Changes

The video discusses the importance of packing freshwater for hikes, highlighting the scarcity of accessible freshwater on Earth. It explains the distribution of freshwater, with only 1% available for use. The video examines the impact of changing freshwater levels on ecosystems, using the Colorado River as a case study. It concludes with a call to action for conserving freshwater to ensure future availability.

What is the most crucial item to bring on a hike during a hot summer day?

• A compass

• Freshwater

• Hiking boots

• A map

What percentage of Earth's water is freshwater?

• About 2%

• About 3%

• Less than 1%

• About 97%

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NGSS.MS-ESS2-4

Where is most of the Earth's freshwater located?

• In glaciers and underground

• In the oceans

• In the atmosphere

• In rivers and lakes

Tags

NGSS.MS-ESS2-4

What percentage of the planet's total water supply is locked up in glaciers or underground?

• About 3%

• Less than 1%

• About 97%

• About 2%

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NGSS.MS-ESS2-4

How many people rely on the Colorado River for water?

• Over 100 million

• About 10 million

• More than 40 million

• Less than 5 million

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NGSS.MS-ESS3-4

What has caused the reduction of water in the Colorado River?

• Natural climate changes

• Increased human usage

• Evaporation only

• Animal consumption

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NGSS.MS-ESS3-4

What is the main reason for the decrease in vaquita population?

• Overfishing

• Pollution

• Loss of freshwater

• Global warming

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NGSS.MS-ESS3-4

What happens when the amount of available freshwater in an ecosystem changes?

• It leads to more rainfall

• It impacts humans and wildlife

• It has no effect

• It increases biodiversity

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why is it important to conserve freshwater?

• To increase ocean levels

• To make it saltier

• To ensure survival of species

• To use more for agriculture

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NGSS.MS-LS2-5

How can humans help in keeping the planet's freshwater levels balanced?

• By using more water

• By ignoring the issue

• By polluting the rivers

• By conserving water

Tags

NGSS.MS-ESS3-4