write geographical divisions of the environmental problems?
Answers
Answer:
Some of the major environmental problems are as follows: 1. Ozone Depletion, Greenhouse Effect and Global Warming 2. Desertification 3. Deforestation 4. Loss of Biodiversity 5. Disposal of Wastes.
1. Ozone Depletion, Greenhouse Effect and Global Warming:
All the three physical phenomena are related to one another to a great extent. To understand their effect on environment, we must first of all know what their meaning, interrelationship and working is.
Ozone is a form of oxygen, which is away from the earth’s surface at a height of about 20 to 30 km in the atmosphere.
2. Desertification:
There is no environmental problem in the world that affects people, especially poor people, as extensively as land degradation or desertification. UNCOD defines desertification as ‘the diminution or destructing of the biological potential of land, which can ultimately led to the desert-like conditions’. The causes of desertification are numerous.
3. Deforestation:
Deforestation is one of the important issues of environmental change and degradation of soil. About 30 per cent of earth’s surface is covered by forests. South America, especially Brazil, West Central Africa and South-East Asia, are home to regions of dense forests.
4. Loss of Biodiversity:
Today, the extinction of several species or loss of biodiversity is a much debated issue among the environmentalists at international level. Many species are disappearing rapidly. According to an estimate, 20 to 75 species are becoming extinct each day because of deforestation. This loss of biodiversity is mainly due to the degeneration of life support system. It provides the basis for life on earth. Biodiversity means the variety of life on earth.
. Disposal of Wastes:
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The high energy consumption and high population densities of the urban societies give rise to large quantities of waste water and sewage as well as household rubbish. Industrialization and urbanization are the main causes of domestic, industrial and nuclear wastes.
The contaminated water supplies cause many diseases of epidemic nature. The industrial waste consists of chemicals, detergents, metals and synthetic compounds besides the solid waste and garbage.