Презентация на тему Acid rains

Hemisphere, such as the United States, Canada, Japan, and

most of the countries of eastern and western Europe, burn coal and petroleum, known as fossil fuels, in automobiles, electric power plants, and factories. Because of this, acid rain has become a serious form of pollution in North America and Europe.

acid rains

lakes and streams, it can kill the organisms that

live in them. Acid rain is particularly harmful to fish and other aquatic life forms.

naturally found in the soil. Acid rain can bring

aluminum out of the soil. Such a process is called leaching. Aquatic life can be poisoned by aluminum that is dissolved in water.

The Effects of Acid Rain

including agricultural crops and trees. In addition, acid rain

corrodes, or wears away, outside surfaces of buildings and other structures. Some of the world's great monuments, including the cathedrals of Europe and the Colosseum in Rome, have shown signs of deterioration caused by acid rain

The Effects of Acid Rain

tens of thousands of lakes had been destroyed by

acid rain. The problem has been most severe in Norway, Sweden, and Canada. Damage from acid rain is not limited by geographic boundaries

the globe. For example, some studies indicate that pollution

from coal-powered electric generating stations in the midwestern United States may be causing severe acid rain problems in eastern Canada and the northeastern United States.

The Extent of the Problem

there is still no clear solution to the problem.

The chief reason is that it is expensive to control the pollution. However, since the damage from acid rain to the environment is permanent, the environmental costs are greater.
 
 

The Extent of the Problem