The Impact of Human Activities on the Environment Essay

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The Impact of Human Activities on the Environment Everything that humans do has some impact on the environment. Pollution is a result of human activities in the environment. The main sources of pollution are farming, water pollution and air pollution. Farming is having an increased impact on the environment. This is because there is increased pressure on farmers to produce a single crop and to concentrate on one form of animal husbandry, such as, dairy cattle or pig breeding. This is more economical because better use can be made of equipment and organizations such as supermarkets have fewer farmers to negotiate purchases with. Also transport is much easier so produce can be easily moved to more…show more content…
Pests are organisms that damage or destroy crops and livestock. There are different types of chemical pesticides for killing different types of pest. Insecticides kill insect pests, herbicides kill weeds and fungicides kill disease- causing fungi. Biodegradable pesticides are broken down by the activities of organisms and only remain in the environment for short time after they are applied. Non-biodegradable pesticides cannot be broken down by organisms and remain in the environment for long periods. Bioaccumulation of non-biodegradable pesticides happens in food chains and webs. Some modern farming practices are damaging the environment and the destruction of habitats reduces the diversity of ecosystems, making them less stable and farming less sustainable. A balance is needed between increasing food production and the need for conserving the environment. Alternative strategies need to be used in order to achieve this. If organic fertilizers are used too much little humus is added to the soil, they damage communities of microorganisms involved in decomposition and the nitrogen cycle, it damages soil structure leading to increased erosion and it increases the risk of eutrophication due to run off. Organic fertilizers such as manure avoid these problems and
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