my green house effect ppt

1. Green house affect and
global warming
Hamza shah

2. What is atmosphere and its
composition?
• The atmosphere is composed of a mix of
several different gases in differing amounts. The
permanent gases whose percentages do not
change from day to day are nitrogen, oxygen and
argon. Nitrogen accounts for 78% of
the atmosphere, oxygen 21% and argon 0.9%.

3. What is greenhouse effect
• The layer of air around the Earth is called
atmosphere.it lets most of the Sun`s rays pass
through it to the Earth`s surface .the
atmosphere also traps some of the heat from
these rays,stopping them from escaping into
space this trapped heat keeps the Earth
warm.this is called greenhouse effect.

4. What is global warming?
• a gradual increase in the overall temperature of
the earth's atmosphere generally attributed to
the greenhouse affect caused by increased levels
of carbon dioxide, CFCs, and other
pollutants.this is called global warming.

5. How industrialization have changed
human activities?
• Since the Industrial Revolution approximately
150 years ago, human activities such as the
burning of fossil fuels and
deforestation have begun to have an effect on
the carbon cycle and the rise of carbon dioxide in
the atmosphere.

6. How human activities are affecting
greenhouse effect?what can we do
• Pollution is effecting green house effect because
there is so much pollution and it is effecting
green house effect and so this human activity
“pollution” can affect the green house effect.
• And if we want to finish pollution we have to
drive smart for example ride bicycle and some
time drive cars and motor bikes

7. Basic block list
pollution
Burning
fossil fuels

8. A