1444Env Human Induced Environmental Challenges Assessment Answers
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Answer:
Humanly Induced Environmental Challenges
Humans are inducing adverse effects on the environment. Activities like waste disposal, agriculture, large-scale fishing, transportation and manufacturing are being conducted without moderation. These are creating huge impacts on land, water and air. Some of the challenges created is air pollution, land degradation, climate change and water contamination (Cochran, 2018).
Air Pollution
This is a very serious impact created as a result of human activities. It is a condition in which vile substances are added to the atmosphere which affects the quality of life, human health and environmental damage (Agudo, 2017).
Causes
It is caused by humans through their activities at homes, cities, industries, offices and schools. One of the major contributors to this problem is the transport sector where cars, trains, ocean vessels and planes consume fossil fuels. When these fuels are burnt, they release carbon dioxide, nitrous oxides and other greenhouse gases into the atmosphere (Cochran, 2018). The other contributor is the manufacturing sector. These plants will emit sulfurs and carbons previously absent in the ecosystem. This causes an ecosystem imbalance with air composition and quality adversely affected.
Air pollution is also caused indirectly when we buy commodities and services that utilize energy during their production. This means that more gasoline, natural gas and coal will be used to manufacture these goods (Air Pollution, n.d.).
Effects of This Pollution on Population
Exposure to nitrogen dioxides, carbon dioxide, particulate matter, sulfur dioxide, mercury and lead are hazardous to our health. Poisonous lead and mercury cause brain damage and are toxic to organ systems and lead to death. Similarly, these heavy metals are toxic to aquatic life and are a threat to public health when consumed. Others like particulate matter and ozone cause health and respiratory challenges mainly in kids and elderly people (Air Pollution, n.d.).
Effects on the Environment
One of the greenhouse gas, carbon dioxide is causing climatic change at a broader scale. It is causing a temperature rise leading to a phenomenon known as global warming. The consequences of this effect is the melting of ice caps on the poles, increase in precipitation, sea level rise and other adverse effects like floods, tornadoes, hurricanes, floods, drought and heat waves. Water and food shortages, infectious diseases and skin diseases are indirect effects of this form of pollution (Air Pollution, n.d.).
Other effects include reduced visibility from smog associated with volatile compounds and nitrous oxides emissions. A good example is a smog common in Beijing. Also, nitrogen oxides and sulfur dioxide react with water forming acid rain. This acid rain is detrimental to aquatic life, lakes, soil and vegetation. It also causes buildings and monuments to deteriorate (Air Pollution, n.d.).
Contribution of Population Size to This Problem
Urbanization in need for prosperity and jobs is attracting people to cities. It is estimated that half of the world’s population resides in cities. Air quality is exacerbated by increasing demands for urban development and bloating population density. As human population continue expanding, the need to manufacture commodities also increases. This means that more industries will be established. Lavish lifestyles call for automobiles which release lead and exhausts to the urban air (Urbanization Effects, 2017).
References
Agudo, K. C. (2017, November 12). Environmental Issues Caused by Human Activities in the Biosphere. Retrieved from https://owlcation.com/stem/Drastic-Changes-in-the-Biosphere
Air Pollution. (n.d.). Retrieved from https://www.cleanerandgreener.org/resources/air-pollution.html
Cochran, A. L. (2018, March 13). Effect of Human Activities on the Environment. Retrieved from https://sciencing.com/effect-human-activities-environment-11374.html
Urbanization Effects. (2017, March 12). Retrieved from https://www.nationalgeographic.com/environment/habitats/urban-threats/?user.testname=none
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