Why is there salt in the sea?

Question

Why is there salt in the sea?

Answer 1

It is time you learned the concept of a 'sink'.

Imagine a huge formation of limestone, and slightly acidic rainfall.

Limestone is a carbonate, and any carbonate and any acid go to salt, water and carbon dioxide.

The salt has to run off somewhere, and this somewhere is always downhill.  The oceans are all downhill.

The oceans are not only our salt sink, but our carbon sink and heat sink too.

Answer 2

Crudely, it is formed by chemical reactions between water and rocks, and carried out to the sea by rivers.

The reverse sometimes happens; an arm of the sea is cut off, dries up, and is buried, giving rise to salt deposits.

There are other things going on as well, such as sea spray being carried on to land, and the elements of salt being emitted from volcanoes.

Answer 3

salt is naturally occurring on the earth and as riverss and streams run into the oceans they bring dissolved saalt with them. As the water of the oceans transpire this salt gets left behind and salt collects. salt is also removed from the ocean in some complicated methods