What is fresh water and solt water?

Freshwater is water with low concentrations of dissolved salts, typically found in rivers, lakes, and groundwater, making it suitable for drinking and irrigation. In contrast, saltwater has a high concentration of salts, primarily found in oceans and seas, and is not suitable for direct human consumption or agricultural use without desalination. Together, they cover most of the Earth's surface, with saltwater comprising about 97% and freshwater about 3% of total water resources.