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4.02 The Biosphere

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Cassandra Swenson

on 6 March 2013

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Transcript of 4.02 The Biosphere

The Arctic Ocean 4.02 The Biosphere Location The Arctic Ocean is found in the Northern Hemisphere,
near North America (Canada and Alaska) and Eurasia
(Russia and Scandinavia). Geography The Arctic Ocean is covered in icecaps that have broken
off of glaciers. The land is also near Alaska and Canada, where snow has the possibility of running off into the water. Effects of Sunlight on Wildlife Global warming is a well known
topic. When the sun melts icecaps,
the predators such as seals and
polar bears will have less room to
stop on land and will eventually die
out. The population of the aquatic
creatures, such as fish will begin
overpopulating with no predator
to keep the food chain going. Many
activist groups and scientists are continuing the study of
global warming to keep animals such as the polar bear
from extinction. Depth and Salinity The depth of the Arctic Ocean is 1,038 meters and
the salinity is the lowest of the five major oceans
because of the streams feeding freshwater into it. Seasonal Changes The amount of sea ice
that is found in the Arctic
ocean changes seasonally.
When the ice is not as
thick and there is not as
much, predators such as
polar bears can fish in the
ocean without as much hassle than trying to find a
particular ice hole. The arctic ocean can become
warm enough to support tropical life forms (72
degrees Fahrenheit).
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