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Extreme Environments
Extreme: Characteristics are at edge of range, as far from Average as possible.
Environment: a person or animal's natural surroundings.

An Extreme Environment is:
A place where it is difficult to find:
o Food
o Water
o Shelter
o And Transport
It is extreme in:
o Relief
o…

Page 2

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Ray A is shorter than Ray B making it more concentrated, it also covers less
surface area of the Earth; this means that where the rays land it gets much
hotter. Ray B has longer to travel and has to cover a larger surface area, as it
comes from the…

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Ephemerals
Lie dormant under the surface until rains
Flowers for a few days
Pollenates in a few days

Animals

Camel




DESERT PROCESSES

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Weathering is the breaking up of rocks where they are
Erosion is moving these pieces of rock through wind or water (flash flooding)
Abrasion is where pieces of rock wear away each other

You only need to know one process and one desert landform:
A desert process:
Freeze-Thaw Weathering
Water…

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HUMAN USES OF HOT DESERTS & IMPACTS

Oil companies
o Need to supply lots of people with food and water
o Waste management
o Burning fossil fuels results in CO2
Scientists (Above impacts)
Tourists- looking for adventure (Above impacts)
Native tribes, i.e. the Bedouin people
o They are becoming more…

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The environmental degradation of land
Can be caused by humans with over cultivation
Linked to climate change


Polar Regions (Antarctica)
WHY ARE POLAR REGIONS SO COLD?




A




Ray B is has travelled much futher to reach the Earth than Ray A, it has picked
up dust along the way making…

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Polar regions spend 6 months in almost complete darkness and 6 in
complete sunlight

VEGETATION

Lowest species diversity on the planet
Mostly lichens and moss
Evergreen leaves so can photosynthesise all year round

PROCESSES

Due to the lack of water erosion does not occur quickly. The most common
process is…

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Inuit people have lived there for 1000s of years. MEDC (more economically
developed country) explorers have learnt a lot from them

About 4000 scientists live in Antarctica during the summer. 2000 are from the
U.S.A. Research centres have negative impacts such as they can result in
sewage leaks and oil…

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o 4 km thick ice
o Isolation
o Having to cross seas to take fuel back
o Sinks may sink due to icebergs, also may destroy pipelines
o The annual freeze
o Dark for 6 months
Global warming may make it easier to mine


POLAR FUTURES
Melting Icecaps
Disruption of…

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