Monday, November 3, 2014

Two Effects of Human Activities on Local Ecosystems



As the human population continues to grow, the amount of natural resources the earth can offer has decreased. In an effort to find new resources many people have turned to wind turbines and wind farms to supplement the growing demand for electricity. Unfortunately, this is wreaking havoc on the ecosystem. Birds are the species most affected, because their breeding and flight behaviors are often disrupted. Their flight paths have been altered resulting in some species changing their migration habits. Some birds have even changed their migration patterns in order to avoid the areas where there are wind farms. The ocean is another ecosystem to suffer due to increases in human population. The Environmental Protection Agency has cited ocean dumping and vessel discharges as two major contributors of human pollution on the oceans. Pollution from point sources, such as those from industrial or municipal facilities, is another contributor. Oil spills and nuclear fallout have caused extreme harm to the ocean’s delicate balance. These pollutants affect the organisms in the ocean, causing illness, altered breeding habits, and ultimately death. Commercial whaling and commercial fishing have caused the near extinction of several species. In the rain forests, the deforestation has caused the loss of several hundreds of species due to the loss of their habitat. Other species have adapted but this has led to mutations in the species. Unless the human population is controlled, it has been projected that the earth will be unable to repair the damage that has been done. 
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