GEOLOGY

Detailed explanation-1: -Of all the water found on Earth, 97.3% is saltwater contained in oceans which is not suitable for direct human consumption. Rest 2.7% is freshwater, out of which 68.7% are ice sheets and glaciers and 30.1% is groundwater.

Detailed explanation-2: -The vast majority of water on the Earth’s surface, over 96 percent, is saline water in the oceans. The freshwater resources, such as water falling from the skies and moving into streams, rivers, lakes, and groundwater, provide people with the water they need every day to live.

Detailed explanation-3: -The oceans cover about 70 percent of the Earth’s surface, and that about 97 percent of all water on and in the Earth is saline-there’s a lot of salty water on our planet.

Detailed explanation-4: -Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks.

Detailed explanation-5: -Over 97 percent of the earth’s water is found in the oceans as salt water.