Answer:
(d) Next to temperature water is an
important abiotic component influencing the life of anorganism/organisms. In an
oceanic ecosystem, the organisms face water related problems like pH, salinity
of water. The salt concentration (salinity) of sea measured in parts per
thousand is 30-35.
The other three options are incorrect.
Note The salinity
(measured in parts per thousand) is less than 5 in land water, 30-35 in sea
water and > 100 do in some hypersaline water bodies like lagans.
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