EVERYDAY SCIENCE

Detailed explanation-1: -The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface.

Detailed explanation-2: -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. Of the world’s total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

Detailed explanation-3: -The vast majority of water on the Earth’s surface, over 96 percent, is saline water in the oceans.

Detailed explanation-4: -More than 97% of water on Earth is found in the oceans. However, the high salt-content of sea water makes it unsuitable for human use.

Detailed explanation-5: -Notice how of the world’s total water supply of about 332.5 million cubic miles of water, over 96 percent is saline. And, of the total freshwater, over 68 percent is locked up in ice and glaciers. Another 30 percent of freshwater is in the ground.