Question

What is the average salinity of sea water?

3.5% salt and other minerals
4.2% salt and other minerals
2.4% salt and other minerals
3.0% salt and other minerals

Answer 1

The average salinity of water is approximately 3.5%, or 35 parts per thousand.

This implies that for every 1 litre of sea water there are 35 grams of salts dissolved in it.

Even though a vast majority of seawater is found in oceans with salinity around 3.5%, seawater is not consistently saline throughout the world.

Answer 2

The answer you’re looking for is
A. 3.5
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