1. Past:
- S ice cover on Earth: 16 million km2 (Antarctica accounts for about 4/5)
- habitats of animals in the area of ice and snow:
+ Antarctica: Despite the harsh climate, 99 % surface is covered by ice and air temperature may be cold that water vapor in the atmosphere can also freeze into ice crystals but the Southern Ocean around Antarctica is the most abundant ocean Earth in the biological category. Where extreme weather this is the place to live for many animals: Blue whales-the largest animals on earth, the seals and some penguins.
+ Arctic: Engines Arctic animals have very many and widely distributed. Animals continent include: North American deer live in herds large, cow chamois, wolves, bears, foxes, ... Birds in Arctic species: snow finches land, Northern Fulmar Seagull, Gull Xira black foot, forest Ducks, Geese and Swans forest. There are many types of fish, and there are also seals, walruses, and whales object
- food Source:
Food + of most predators in the Antarctic, including the blue whale is the krill card. Which of these foods is that krill to plankton just emerged from the deep waters.
+ Even the Antarctic icebergs may have life. The small ice fish predators hide in holes in the ice. White albatross species nest on the ice, where it is often safer in the coup.
2. Nay
- antarctica Temperatures up: Some regions of Antarctica is warming; particularly strong warming recorded in the Antarctic Peninsula peninsula. Research by Eric Steig published in 2009 showed that the first trend average surface temperature on the Antarctic continent slight increase of> 0.05 ° C per decade from 1957 to 2006. Look This research also shows that West Antarctica has warmed 0.1 ° C per decade over the past 50 years, and is the strongest warming in the winter and spring. This was partially offset by the cooling in East Antarctica. This is the signal recorded from only one study in Antarctica to warming caused by emissions of carbon dioxide by humans.
- Class of ice collapsed: In 2002, the Larsen-B ice of the Antarctic Peninsula collapsed. Between February 28 and March 8, 2008, approximately 570km2 area of the ice Wilkins ice in the southwestern part of the peninsula collapsed, making the remaining area of 15,000 km2 ice avalanche risk has continued. Classes are playing back the tape with a width of about 6 km, before it collapsed on 04/05/2009. According to NASA, the melting Antarctic ice surfaces across the largest place in the last 30 years the largest in 2005, while the area has an area roughly the size of California melted in a short time; this may be the result of an increase in temperature to 5 ° C higher.
- The area of Antarctica is 14 trieukm2 wherein freezes is 13.72 million km2. If the entire Antarctic ice melted, sea levels around the world will rise about 70 m.
- In 9/2011, the ice covering the Arctic Ocean has melted and shrunk to its lowest level in history, including since satellite observations 40 years ago.
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