GP DISCUSSIONS.

Have you ever thought of living on the earth with loads of rubbish around? Have you ever thought of living on the earth with limited amount of oxygen and worried about when we'll die? Have you ever thought of living on the earth with the humid weather and many people with skin cancer as the sun is too hot because of the depleted ozone layer?
Actually, the mankind is the main cause of the environmental problems. Its purly because that they are the one who created the pollutions and thus, lead to what we called, the environmental problems.
There are 3 kinds of main pollutions that lead to the environmental problems. They are land,water and air pollution.

LAND POLLUTION

Land pollution is often a consequence of increasing urbanisation and industrialisation. Man’s increasing demands on the environment and the resources it holds are putting our country under pressure.
The advent of the Industrial Revolution saw the beginning of this pressure and, although the emphasis may have changed, it still continues.
There are a series of events which all impinged on the countryside destroying habitats
1.INCREASED MECHANISATION
2.INCREASED URBANISATION
3.INCREASED AGRICULTURAL LAND AND FIELD SIZE

AIR POLLUTION

Air pollution is a chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth's ecosystems. Worldwide air pollution is responsible for large numbers of deaths and cases of respiratory diseases.

WATER POLLUTION

Water pollution is a large set of adverse effects upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities.Water is only called polluted when it is not able to be used for what one wants it to be used for. Water pollution has many causes and characteristics. Increases in nutrient loading may lead to eutrophication. Organic wastes such as sewage impose high oxygen demands on the receiving water leading to oxygen depletion with potentially severe impacts on the whole eco-system. Industries discharge a variety of pollutants in their wastewater including metals, organic toxins, oils, nutrients, and solids. Discharges can also have thermal effects, especially those from power stations, and these too reduce the available oxygen. Silt-bearing runoff from many activities including construction sites, deforestation and agriculture can inhibit the penetration of sunlight through the water column, restricting photosynthesis and causing blanketing of the lake or river bed, in turn damaging ecological systems.

The effects on human health:
Adverse air quality can kill many organisms including humans. Ozone pollution can cause respiratory disease, cardiovascular disease, throat inflammation, chest pain, and congestion. Water pollution causes approximately 14,000 deaths per day, mostly due to contamination of drinking water by untreated sewage in developing countries. Oil spills can cause skin irritations and rashes. Noise pollution induces hearing loss, high blood pressure, stress, and sleep disturbance.

Labels: Environment

Y 07S10-GRP02

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