Topics: Tropics, Extinction, Arctic Circle Pages: 3 (937 words) Published: June 3, 2013
Biodiversity Ecological Essay

Biodiversity is the variety of plant and animal species. Biodiversity is very important to our ecosystem. The biodiversity of species can provide a variety of food such as meat, vegetables, and fruit. Most of our medicinal drugs come from plants. The periwinkle plant found in Madagascar, helps treat a lot of patients’ cancer. The yew tree also provides drugs that can fight cancer. Biodiversity is being threatened and we need to protect it. A boy named Jason Spaniel helped protect biodiversity by creating a wetland with a bird feeder. An ecosystem is a level in the biosphere where organisms interact with their environment. Endangered species are in danger of becoming extinct because of harms to their population. Some examples of endangered species are whooping cranes, manatees, black-footed ferrets, and the Florida panther. Manatees became endangered because of boats. Since the manatees roam just below the water surface, the boat propellers cut them and either kills them or just leave them harmed. Their population is dying down because of this and is they don’t reproduce fast enough to catch up with the individuals dying their species can get wiped out. Threatened species are likely to become endangered in the near future if the right actions to protect them are not taken. The bald eagle was endangered before but is now considered a threatened species because its population is increasing. There was once a very harmful environmental contaminant called DDT (Dichlorodiphenyltrichloroethane) which caused harm as soon as it entered the environment. It was an insecticide used to kill mosquitoes and pests but it was sprayed from jets in the sky and on farm crops which killed and harmed bald eagles and fish when it washed into lakes and streams. The birds that ate the contaminated fish laid extremely thin-shelled eggs which cause the shells to break before the young could develop and hatch. Luckily it was banned in the U.S. in 1972 but...
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