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Effects of Air Pollution Smog

Smog is a combination of various gases with water vapour and dust. A large part of the gases that form smog is produced when fuels are burnt. Smog forms when heat and sunlight react with these gases and fine particles in the air. During the winter, wind speeds are low and cause the smoke and fog to stagnate; hence pollution levels can increase near ground level. This keeps the pollution close to the ground, right where people are breathing. It hampers visibility and harms the environment. Smog refers to hazy air that causes difficult breathing conditions.


Acid Rain

This phenomenon occurs when sulphur dioxide and nitrogen oxides from the burning of fossil fuels such as, petrol, diesel, and coal combine with water vapour in the atmosphere and fall as rain, snow or fog. These gases can also be emitted from natural sources like volcanoes. Acid rain causes extensive damage to water, forest, soil resources and even human health.


Global Warming

Our earth's atmosphere create what is popularly called a greenhouse effect. The gases in it protects the earth from the harsh ultraviolet rays of the sun and forms a barrier to keep a certain amount of heat near the planet. Without the air surrounding the earth, the climate would be more like that of the moon, if you can say such a thing, and life would be impossible.

However, an increasing composition of these gases will make the earth hotter, not warmer! This increase in average global temperature will cause the polar ice caps to melt, raise the sea level leading to floods all over. On the other hand, increase in temperature will result in dry lands and drought. Change in temperature will have a profound impact on the life styles of most plants and animals causing imbalance in the ecosystem.


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