Question

where is the salt in the sea mostly from?​

Answer 1

The salt in the sea primarily comes from various sources, with the majority originating from the weathering and erosion of rocks on land. Rainfall dissolves minerals from rocks, carrying them into rivers that eventually flow into the ocean. Over time, the water in the ocean evaporates, leaving behind the dissolved salts, which accumulate and contribute to the salinity of seawater. Other minor contributors include volcanic activity, hydrothermal vents, and chemical reactions occurring within the ocean itself.