Question

Why are the Oceans salty??
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Answer 1

Answer:

Oceans are salty because the sand in the sea and the coral reefs have a high content of iodine.

Answer 2

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But seawater wasn't always so salty; when the Earth's oceans first formed about 3.8 billion years ago, as the surface of the planet cooled enough to allow water vapour to liquify, the oceans were mostly fresh water.