The Grand Canyon Arizona, U.S.A. Weater/Climate • Summer – The North Rim is fairly cool because of elevation – The South Rim has pleasant tempuratures – The Inner canyon can reach up to around 105°F • Winter – The North Rim closes due to heavy snow – General conditions are extreme • Spring/Fall – Be prepared for a variety of conditions; cold/rainy Landforms • The Grand Canyon is – 277 miles long – 18 miles wide – And a mile deep Waterways • The Colorado River is an 1450 mile long river that is within the Canyon • The River over millions of years carved out the Canyon to what it is today Vegetation • The supreme diversity – 1737 known species of plants – 167 species of fungi – 64 species of moss – 195 species of lichen – 129 plant communities Animals • The Grand Canyon is home to many different animals – Amphibians, birds, crustaceans, fish, insects, insects, mammals, mollusks, and reptiles • The Grand Canyon contains every habitat except a tundra • Because of the large land preserved, it is deemed a valuable reserve. Environmental Issues • Nearby factories emit sulfur dioxide and causes smog, decreasing the air quality • Dams has become an issue as well, ruining natural habitats • And like most parks, there are some endangered species History • Paleo-Hunters hunted around the Grand Canyon around 10,000 years ago. – A pot was found and was carbon dated to around 4000 years ago • The Navajos settled around it at around the 1,300s • John Wesley Powell and 9 men rafted the Colorado River in 1869 • Mining began in the 1870s and 1880s for lead, zinc, asbestos, and copper Preservation Efforts • In September 1991 the Grand Canyon Trust and the owners of the Navajo Generating Station made an agreement to reduce sulfur dioxide emissions • In 1997, Congress chose certain areas to have a high degree of attention to the air to reduce pollution. The Grand Canyon was one of them. • And of course, park rangers tell the visitors to avoid wild animals to keep them natural.
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