Adverse Effects of People Activities

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ADVERSE EFFECTS OF PEOPLE ACTIVITIES The Greenhouse Effect Too much carbon dioxide and other gases emitted by factories are accumulating in the atmosphere. These gases allow sunlight to penetrate the earth’s atmosphere but unfortunately, they also trap radiant heat and revert its escape into outer space. The immediate consequence is Global Warming, which is better known as the Green House Effect The rise in the average temperature of the earth could have serious consequence.

Among them is the melting of ice and glaciers in the North and South poles. This will raise the water level in many parts of the world, resulting in the submersion of the low-lying coastal towns and cities. Ozone Depletion Ozone Layer is formed when ultraviolet radiation (UV) splits a molecule of oxygen (O? ), and the free oxygen atoms (O) combine with other oxygen molecules. Ozone acts as a filter in the upper atmosphere, preventing the harmful ultraviolet radiation of the sun from reaching the earth.

Carbon compounds such as carbon dioxide (CO? ) and chlorofluorocarbons (CFCs), nitrogen oxides (NO), and methane break up Ozone molecules. Acid Rain Sulfur and nitrogen oxides are released from industrial factories, electrical power plants, smelting plants and motor vehicles. When these gases combine with the moisture in the atmosphere, they return to the ground as sulfuric acids and nitric acids. These are popularly known as Acid Rain, and it bring damages to lakes, the soil, forest and buildings. Water Pollution

Industrial wastes disposal of in streams and rivers have polluted these bodies of water, making them unfit for the fish and other aquatic animals to inhabit. When the water from these streams and river flows into lakes and oceans, then these bodies of water also become populated Deforestation The overcutting of trees in virgin forest has done irreparable damages to environment. Effects of forest destruction •Soil Erosion •Flooding •Silting of rivers and lakes with soil and rocks •Loss of habitat of many animal and plant species •Deforested areas become barren and useless

Solid Waste Disposal Progress produces a large amount of garbage. Much of these are non-biodegradable or hazardous materials. How to dispose of them is a big problem in many countries. The most efficient is through landfills. Improper garbage disposal is known to have triggered the spread of diseases epidemics and other adverse effect on people’s health. Nuclear Waste Nuclear power is among the most efficient and relatively cheap source of energy. But the technology is highly sophisticated and the possibility of nuclear disaster is not remote.

The resulting nuclear radiations are very harmful to human beings and heavy dozes are fatal. Noise Pollution Noise pollution is a direct result if industrial revolution. Noisy engines in factories, the noise produce by motor vehicles, the irritating noise produce by jackhammer and almost unbearable noise from jet engines are some examples of noise pollution. Bad effects of noise pollution •Psychological effect (irritability) •Mental stress •Short temperedness •Temporary or permanent loss of hearing

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