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Fish, Water Pollution Effect on

Pollution has been acknowledged as major cause of worldwide fish stock depletion, second only to over fishing.

While the Romans saw the need to farm the sea and conserve its food resources, modern man has directed his efforts toward primitive exploitation of oceans, lakes, rivers and streams, using them as dumps for industrial wastes, municipal sewage and the run-off of agricultural chemicals (which can take decades to leach through) - and plundering their diminishing marine-life population.

The results have been horrendous, on a worldwide scale. In the Western World, the heating of water (and possibly more) by atomic energy plants, causes vast ecology changes to the aquatic environment. This effects plankton organisms, the hatching of eggs deposited by fish and insects and the spawning of both fish and invertebrates. Aquatic organisms have narrower ranges of temperature tolerance than that of most land animals. See 'Fish'

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