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Rainforests are usually located 5° either side of the
Equator.
Many of the Tropical
Rainforests are in
danger of
deforestation due to
the needs of us
humans.
This is what is happening to the
rainforests. This affects not only
the people living near and in the
rainforests, but also the whole
world.…read more

Slide 3

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Once the soils nutrients has been
· The temperature within the
used up by for example farmers then
rainforest is high throughout the
it is left in this condition.
year, at an average of 27c.
· Also, there is daily convectional
rainfall, which totals to over
2000mm per year.
The red clay soils up to 30 metres
deep because of rapid weathering.
The soil is leached as the nutrients
are washed away by the heavy
rainfall.…read more

Slide 4

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The tropical
rainforest is stratified
into 5 different layers.
Emergent Layer: The tallest
trees are about 50 metres high,
but can be about 80 metres.
Canopy Layer: trees
more than 30 metres
high, home to most
insects, birds and
animals.
Under story: Receives
only 2-15% of sunlight
and contains young trees.…read more

Slide 5

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Rainforests are cut down everyday
for several different reasons and they
are:
The effects of these are harming the
·AGRICULTURE ­ farmland environment around the area and globally.
needed for settlers Firstly, it's causing excess soil erosion as
·SETTLEMENT ­ land needed to there are less trees to intercept the heavy
provide homes rainfall. Secondly, as the rainforest
·RANCHING ­ forest cleared to contains 90% of all known species of
graze cattle plants and animals, it is predicted that in
·LOGGING ­ timber exported, to the next 40 years 100,000 species will
MEDC's become extinct.
·MINING ­ gold, iron ore and Globally, cutting down trees is causing
aluminium ore increased global warming.
·DAMS ­ hydro-electricity power
·ROADS ­ 12,000km of new roads…read more

Slide 6

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Global Warming is the rise in the Earth's average temperature
caused by an increase in the greenhouse effect.
The sun sends solar energy
which reaches the earth as light.
One of the main causes of global
The Earth's surface absorbs
warming is deforestation. This is due
solar energy and radiates heat,
to the fact that forests are being cut
however some of the heat is
down therefore there are fewer trees
trapped in the Earth's surface.
converting carbon dioxide into
This is called global warming.
oxygen.
Evidence that global warming exists is:
1. Glaciers are melting
2. Coral reefs are dying
3. Average global temperature has
increased by 0.6°c in the past 100
years…read more

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