INTRODUCTION
Global warming is
the term used to describe a gradual increase in the average temperature of the
Earth's atmosphere and its oceans, a change that is believed to be permanently
changing the Earth's climate.The sun sends out energy as heat and light.
This energy comes to our earth during the day time.
Some of the sun’s rays get ‘trapped’ in
the atmosphere.
Some of them get reflected back into
space.
The ones which get through the atmosphere
warm the earth up.
CONTENT
All the time, the earth radiates heat
into space, which cools it down. We only really notice this at night, when
there is no heating from the sun.
Some of the heat going out is trapped by
the atmosphere. This is what makes our planet warm enough to live on.
But if too much heat is trapped,
our planet will warm up and the climate will change.
- How do humans increase carbon dioxide levels in the atmosphere?
Burning fossil fuels
releases the carbon dioxide stored millions of years ago. Most of the increased
carbon dioxide comes from fossil fuels, 
Deforestation
releases the carbon stored in trees. Less trees also means less carbon
dioxide can
be removed from the atmosphere.
Methane is produced when bacteria rot organic
matter, Methane is also released when fossil
fuels are extracted, The amount of methane in
the atmosphere has increased by two and a half times since the Industrial
Revolution.
CONCLUSION
Because greenhouse gas emissions
are tied very closely to our energy consumption, using less fossil fuel based
energy puts fewer greenhouse gases into the atmosphere.
but we still have the chance to do something about it by relying
on alternatives fuels or green energy
thus reducing the emission of green house gases & saving our planet.
