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Nothern Environment Climate Change

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by

lyn torco

on 23 April 2010

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Transcript of Nothern Environment Climate Change

Double click anywhere & add an idea Polar bears & Climate Change How Polar Bears are
being affected by climate change Greenhouse gas emissions and destruction of ecosystems is causing change by disturbing the balanced cycles. For example the Carbon cycle. In 2006, fossil fuels would burn
8379 million tons of carbon dioxide Climate Change the environment is threatened by
rising sea levels,extreme weather
and diseases Ice caps are melting sooner and forming later
Temperatures are at their highest
in the last 400 years climate change is robbing polar bears of ice floes Ice floes are hunting grounds, shelter and transportation melting ice floes are forcing bears to shore, drown or stranding them on ice chunks Polar bear numbers are
dwindling to less than 25,000 25% less bears than 25 years ago
in Hudson Bay Area moving inland to towns to scavenge for food of the 19 populations around the world; 15 of the populations are either declining or have unknown status less time for female bears to feed
and store fat to sustain pregnancy
and care for cubs bears too thin to reproduce polar bears are eating their own cubs to survive This image shows how much temperature will change from the year 2000-2090 diagram of the natural greenhouse effect.
In a balanced system the amount of heat absorbed by the earth is equal to the amount of heat lost to space. right now greenhouse gases are trapping heat on Earth a diagram of
carbon dioxide cycle
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