NEET BIOLOGY

Detailed explanation-1: -Lakes are bodies of freshwater entirely surrounded by land. There are lakes on every continent and in every ecosystem. A lake is a body of water that is surrounded by land.

Detailed explanation-2: -Rain replenishes freshwater in rivers and streams, so they don’t taste salty. However, the water in the ocean collects all of the salt and minerals from all of the rivers that flow into it.

Detailed explanation-3: -This is because their water contains sodium and chloride ions while the others don’t. Most lakes are filled with minerals other than sodium and chloride, which don’t lend a salty taste to their water.

Detailed explanation-4: -River waters are constantly being restocked by fresh water from rain and springs, thus they do not taste salty. But the ocean collects all of the river water salt and minerals. The ocean floor also contains minerals which get dissolved in the water, adding to the salinity of the sea.