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POLAR & HOT CLIMATE
Polar Hot
-Winters are very cold (down to -50 -Cold night temperature due to the
*C) with few or no hours of light. very few clouds to keep the heat in.
-The coldest glacial regions support -Occasional intense downfalls of
no life at all. rain that cause flash flooding.
-Hot day time temperatures often
-Summers are short with many above 30*C.
hours of light; this is growing
seasons in the tundra. -There is very little seasonal change
in very arid areas-slightly more in
-Dry with less than 3000mm of semi-arid areas.
precipitation per year falling mostly
as snow. -The hottest arid environments
support little plant, animal & human
-Cold due to the high latitudes, the life.
further north, the more extreme the -Dry with sometimes less than
cold. 250mm precipitation a year.…read more

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WHY ARE EXTREME CLIMATES
FRAGILE?
Polar Flora & Fauna
Glacial Regions
Hot Arid, Flora & Fauna
Semi-Arid Regions
-Support very little life other than
-Animals store water in fat & tend to be
some insects, arachnids & mice.
nocturnal, spending the day underground
-Some handy plants grow close to out of the sun.
the ground survive the strong winds. -Insects collect moisture from the air.
Tundra Regions -Some animals have, for example, large
ears to help dissipate heat.
-Many animals, insects & birds can -Plants store water (acacia trees) and / or
live in tundra regions. They are
specially adapted to survive the cold have extensive root systems to reach
with thick layers of fat and / or fur. water far underground.
Many are coloured white to -Seeds can stay dormant for years &
camouflage themselves against produce brightly coloured flowers to
snow.
attract insects as soon as there is rainfall.
- Body conditions suit water-loving
plants such as sedges & moss.…read more

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Extreme Climates
EXTREME CLIMATES ARE VERY VULNERABLE TO CLIMATE CHANGE AS
THEIR ECOSYSTEMS ARE SO FRAGILE.
In Polar Environments, Climate In Hot Arid Environments, Climate
Change Can Lead To: Change Can Lead To:
Burst Lakes: In glacial regions, -Extreme drought which even the
where there is a build-up of melt specially adapted flora & fauna can't
water, lakes can burst their banks survive.
resulting in flood water destroying
ecosystems. -Desertification where the area of
desert increases- animals & plants
Solifluction: In tundra regions, large that live in what live In semi-arid
areas of soil melt & move like a areas cannot adapt & they die.
landslide, destroying vegetation in its
path.…read more

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PEOPLE & EXTREME CLIMATES
Polar Environment ­ Human Adaptations.
1) Adaptations To The Cold:
Triple glazing in houses.
Wearing fur, wool, layers etc. To keep warm
Use of geothermal power.
2) Adaptations To Frozen Ground:
Houses raised up above ground.
Hunting rather than growing crops.
Roads built on gravel to prevent them cracking with
solifluction.
3) Adaptations To Snow:
o Steep roofs so snow falls off.…read more

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PEOPLE & EXTREME CLIMATES
Hot Arid Environment ­ Human Adaptations.
1) Adaptations To The Heat:
Thick walls & small windows to keep heat out.
Air conditioning in homes.
Wearing loose-fitting clothes.
Wearing head coverings.
2) Adaptations To The Lack Of Water.
Flat roofs on buildings to catch water.
Irrigation used to grow crops.
Nomadic farming so areas aren't overgrazed by herds.…read more

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