In early times the forest covered nearly all of the earth's surface. As recent as the 19th century tropical rain forests covered 20% of all dry land but was cut down to about 7% by the end if the 20th century.
Due to population growth as well as Industrial growth the demand for the Rainforest resource's has been huge.
A historical aspect of rain forest deforestation took place mostly before the year 1950. (Michael Williams of History today.) During the 450 years from 1492 to c.1950 European influence has been dynamic.
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Each environment is directly affected by pollutants and depletion of trees. In the far North the pine forest are diminishing due to clearcutting practices. Railroads are another source for clearcutting, these railroads add to pollution and emmisions that are harmfull to our ozone layer.
Most distruction is seen in the North American rain forests because these forests are in lowland areas they are more easily acessable and prone to mans pollution. The rainforests that are least affected are the ones in higher elevated areas with rugged peaks.
Greenhouse gases are increased in the more populated areas of the clearcutted rainforests.Because of overpopulated areas of surrounding villages the forests are losing their trees as well as being continually contaminated.
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