The Grand Canyon The Grand Canyon by linxiaoqin


									The Grand Canyon
Arizona, U.S.A.
• 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
• The Grand Canyon is
  – 277 miles long
  – 18 miles wide
  – And a mile deep
• 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
• The supreme diversity
  – 1737 known species of plants
  – 167 species of fungi
  – 64 species of moss
  – 195 species of lichen
  – 129 plant communities
• The Grand Canyon is home to many different
  – 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
• 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
• 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
• And of course, park rangers tell the visitors to
  avoid wild animals to keep them natural.

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