Deforestation ​
Deforestation is the purposeful clearing of forested land. Throughout history and into modern times, forests have been razed to make space for agriculture and animal grazing, and to obtain wood for fuel, manufacturing, and construction. 12. About 2,000 years ago, 80 percent of Western Europe was forested; today the figure is 34 percent.

Pollution

Millions of people all over the world live in areas where the air is extremely polluted and dangerous to be breathed. Needless to say, in most cases air pollution is caused by people. It not only affects the atmosphere, but influences man’s health as well. As a result, people suffer from asthma, cough, lung diseases and many other dangerous maladies.

Ice caps and glaciers are melting. It causes more floods and raises sea levels.

Ice melting

​Temperatures are rising in hot regions. It provokes forest fires, which cause millions of hectares of trees to disappear.

Forest fires

Global warming causes extinction. It is the death of all members of species of plants, animals or other organisms.

Extinction

Global warming