The Salty Secret: Unraveling Why Sea Water is Salty, But Rivers Are Fresh
The Salty Secret: Unraveling Why Sea Water is Salty, But Rivers Are Fresh
- •Rainwater, slightly acidic from atmospheric carbon dioxide, erodes rocks on land, dissolving minerals like sodium and chloride.
- •Rivers transport these dissolved minerals to the sea; river water remains fresh due to low mineral concentration and constant flow.
- •The sea acts as a 'final collection point' where salts accumulate over billions of years, as there's no outlet for them.
- •Evaporation removes pure water from the sea, leaving salts behind, continuously increasing salinity.
- •Underwater hydrothermal vents and volcanoes also release minerals and salts directly into the sea, contributing to its saltiness.
