essay on population growth effects the environment
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❖Answer:
Growing population will result in the depletion of natural resources such as water, fossil fuels (Hubert, 1982); deforestation and loss of ecosystems; and emergence of new diseases. It will also lead to more starvation, hunger and unhygienic living conditions in poor countries.
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Deforestation for agriculture
If the human population growth is left unchecked, a day might come when the earths resources will not be able to sustain the requirements of human beings. As overpopulation will demand increasing food, energy, and other resources, humans will engage in activities that will directly affect our environment and ecosystem. For instance, about 160,000 square kilometers per of tropical rainforests are cleared for agricultural use thus resulting in loss of habitat for the biodiversity (Laurance, 1999). Such loss of forests will contribute to global warming and other negative effects on environment.
Urbanization/industrialization
In order to meet the growing demand of increasing population, humans have been using technologies such as industrialization for enhanced production of food and other needs. Increased industrialization and urbanization results in air pollution, noise pollution, and water pollution which are all detrimental to our environment.
Increased urbanization will also mean clearance of forests for construction of roads, buildings etc. which further adds to pollution.
Depletion of non-renewable natural resources and emission of green house gases
Uncontrolled growth of population will lead to rapid depletion of non-renewable natural resources such as fossil fuels which are used as source of energy. The burning of fossil fuel i.e. carbon based fuels, mainly wood, coal, oil and natural gas produces significant amount of CO2 which is one of the main green house gases that contributes to global warming (International Energy Outlook, 2000). The green house effect maintains the earth at comfortable temperature range but if there is excessive release of CO2 and other harmful gases from the industries and factories, the green house gases gets easily out of control and will lead to so many problems like continental drift, climate change, natural disasters and variations of suns out put.