With their help, a human protects crops and improves yield.
At the same time, there are many negative aspects which should be described in a “Pesticide water pollution” essay.
Soluble forms of these metals exist in different types of sewage.
They were found in the waters leaked from mines and dumps of scrap metal, and also from natural bogs.
For example, insecticides rotenone and DDT, pesticides 2,4-D, etc. Even if the concentration of toxic chemicals is non-lethal, these substances can lead to animal death or other harmful consequences at the next stage of the food chain.
It’s worth mentioning in an essay on diseases caused by water pollution that gulls died after eating large amounts of fish containing high concentrations of DDT.Describe in a water pollution cause and effect essay that before the development of civilization the cycle of water in the biosphere was balanced.The ocean received from rivers as much water as was consumed during its evaporation.The relevance of your water pollution research paper should be substantiated by the fact that previously inexhaustible resource becomes exhausted.Today, in many parts of the world, there is not enough water suitable for drinking, industrial production, and irrigation.A high level of mercury is observed in industrial effluents, lakes, and rivers.Passing through the organisms of bacteria, the toxic substances become even more harmful.If the climate did not change, the rivers would not dry and the level in the lakes would not be lowered.With the development of civilization, the natural cycle was violated. You may use it as a hook for water pollution essay. Without water, a human cannot live more than three days.But even realizing the importance of the role of water in his life, he still continues to rigidly exploit water objects irrevocably changing their natural regime due to a negative impact of wastes.