The greenhouse effect is a natural process that warms the Earth's surface by trapping heat from the sun using greenhouse gases like carbon dioxide, methane, and nitrous oxide in the atmosphere. Human activities such as burning fossil fuels and deforestation have increased greenhouse gas emissions and caused additional global warming by enhancing the greenhouse effect. Key contributors to increased greenhouse gas emissions include burning fossil fuels, deforestation, farming practices, and industrial activities. Effects of this increased greenhouse effect include rising global temperatures, rising sea levels, and more severe weather events.

2. What is Green House Effect..??
• The greenhouse effect is a natural process that warms
the Earth’s surface
• When the earth’s atmosphere traps the heat radiation
from the sun and re-radiated by greenhouse gases
• Greenhouse gases include water vapour, carbon
dioxide, methane, nitrous oxide, ozone and some
artificial chemicals such as chlorofluorocarbons (CFCs)
• This warms the Earth , so it can support life
• This process traps extra heat, and causing the Earth's
temperature to rise

3. Man made green house effect….
• It is caused by man’s activities that emit greenhouse
gases to the atmosphere
• Most important of these is the burning of fossil fuels
• Fossil fuels contain carbon, and when they are burnt
this carbon combines with oxygen in the atmosphere to
form carbon dioxide
• Changes in land use are also important sources of
greenhouse gas emissions. For example deforestation

4. Process of Green house effect….

7. Emissions by green house gases….

8. Green house gases emission by
economic sector.…

9. Green house gases….
• Carbon dioxide (CO2): A minor but very important component
of the atmosphere, carbon dioxide is released through natural
processes such as respiration and volcano eruptions and
through human activities such as deforestation, land use
changes, and burning fossil fuels. Humans have increased
atmospheric CO2 concentration by more than a third since the
Industrial Revolution began. This is the most important long-
lived "forcing" of climate change.
• Nitrous oxide: A powerful greenhouse gas produced by soil
cultivation practices, especially the use of commercial and
organic fertilizers, fossil fuel combustion, nitric acid production,
and biomass burning.

10. • Methane : A hydrocarbon gas produced both through natural
sources and human activities, including the decomposition of wastes
in landfills, agriculture, and especially rice cultivation, as well as
ruminant digestion and manure management associated with
domestic livestock. On a molecule-for-molecule basis, methane is a
far more active greenhouse gas than carbon dioxide, but also one
which is much less abundant in the atmosphere.
. Chlorofluorocarbons (CFCs): Synthetic compounds entirely of
industrial origin used in a number of applications, but now largely
regulated in production and release to the atmosphere by
international agreement for their ability to contribute to destruction
of the ozone layer. They are also greenhouse gases.

11. Causes….
1. Burning of Fossil Fuels
2. Deforestation
3. Increase in Population
4. Farming
5. Industrial Waste and Landfills
6. Fields burning

12. Effects….
• Rise in global warming
• Increased carbon dioxide levels will affect
biological systems
• Polar ice caps melting
• Increased probability and intensity of
droughts and heat waves
• Warmer waters and more hurricanes
• Spread of disease

13. Effects on ozone layer….
• A layer in the earth's stratosphere which absorbs most
of the ultraviolet radiation reaching the earth from the
sun
• The ozone helps to keep out harmful ultraviolet rays
that cause sunburn to human skin and damage to
plants
• Chemicals such as chlorofluorocarbons (CFCs) and
greenhouse gasses which are held responsible for ozone
depletion
• The resulting ozone holes let harmful ultraviolet
radiation in and add to the greenhouse effect

14. Prevention….
• Reduce, recycle and reuse
• Plant a tree
• Avoid those products with excessive packaging
• Light right
• Buy Energy-Efficient Products
• Use the "Off" Switch
• Encourage Others to Conserve