Question

What differences are there in the salinity of oceans

Answer 1

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Answer 2

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• Salinity is defined as total amount of dissolved salts in sea water.

• It is calculated as amount of salt (in grams) dissolved in 1000 gms of sea water and usually expressed in "ppt" (parts per thousand).

• Salinity differs from one water source to other.

• For example:-salinity of fresh water(ponds,rivers etc..) is 0-5 ppt, brakish water (estuaries, Swamps etc..)

• The main reason for these differences can attributed to :-

1. Rate of chemical erosion of bed rock.
2. Rate of evaporation.
3. Presence of biological elements (plants and animals).

• For example, if rate of evaporation is high, the amount of salt gets accumulated is high leading to high salinity.

• Example:- dead sea has salinity of 238%.

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