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Earth and Human Activity: Earth’s Water Systems
Water Scarcity
Description
Water Scarcity
Even though water covers most of Earth’s surface, only a small part of it is usable freshwater. Most of our water is saltwater or frozen in glaciers and polar ice caps. Water scarcity happens when the demand for freshwater is greater than what is available in a region. This can be...
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Transcript
Most Americans have easy access to clean water, but billions of people around the world do not. Water scarcity is one of the planet’s most serious resource issues. Water covers most of our planet, but nearly all of it is salt water or frozen in ice, leaving only a tiny fraction as usable freshwater.
Rainfall is uneven across the globe. Col...
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