COP21

2. BUT….
• Earth is a very special planet – its orbits close enough to the sun to
receive a lot of energy, but far enough away not to be scorched.
• To help keep the earth’s weather constant, our planet is wrapped
in a layer of greenhouse gases.
• This layer acts like a blanket, keeping the earth warm and shielding
it from the cold of universe. This is commonly referred to as the
greenhouse effect.
• Carbon dioxide (CO2), is one of the important greenhouses gases,
the other main ones are methane and nitrous oxides.
• Incoming solar radiation (INSOLATION) passes through the layer of
greenhouse gases.
• Some of the heat is reflected back into space but some is trapped
to warm our atmosphere.

4. • When fossil fuels - coal, oil and natural gas - are burnt they
release CO2 into the atmosphere.
• C02 is released when forest areas are cleared, in industry and
when using cars
• Methane is released in farming especially cattle farming
• Burning coal to produce electricity
• Because of this the layer of greenhouse gas is getting thicker,
which is in turn making the Earth warmer.
• Thus the ongoing unlimited burning of fossil fuels is the cause
of climate change.
• In order to satisfy our endless hunger for energy we are burning
unlimited quantities of fossil fuels.

7. .