AP BIOLOGY

Detailed explanation-1: -Of all the water that exists on our planet, roughly 97% is saltwater and less than 3% is freshwater. Most of Earth’s freshwater is frozen in glaciers, ice caps, or is deep underground in aquifers.

Detailed explanation-2: -Only about three percent of Earth’s water is freshwater. Of that, only about 1.2 percent can be used as drinking water; the rest is locked up in glaciers, ice caps, and permafrost, or buried deep in the ground.

Detailed explanation-3: -In the first bar, notice how only 2.5% of Earth’s water is freshwater-the amount needed for life to survive. The middle bar shows the breakdown of freshwater. Almost all of it is locked up in ice and in the ground. Only a little more than 1.2% of all freshwater is surface water, which serves most of life’s needs.

Detailed explanation-4: -97% of the earth’s water is found in the oceans (too salty for drinking, growing crops, and most industrial uses except cooling). 3% of the earth’s water is fresh.

Detailed explanation-5: -The ocean holds about 97 percent of the Earth’s water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes.