Greenhouses trap heat from sunlight due to the presence of greenhouse gases like carbon dioxide and water vapor, creating a warm environment for plants. Natural greenhouse gases include water vapor, carbon dioxide, methane and nitrous oxide. Man-made sources that increase greenhouse gases are the burning of fossil fuels, deforestation, aerosols, and refrigerants. Increased greenhouse gases are causing global warming by trapping more heat in the atmosphere. This is leading to rising sea levels, changes in climate and wildlife, and more frequent extreme weather events. Prevention efforts include using green technology, reducing emissions, increasing awareness, and supporting international agreements.

1. Green House
Effect & Climate
Change

2. What is a GREENHOUSE ?
• Greenhouses are special buildings
usually made from glass & steel. They
are used to grow plants which need
humidity, tropical temperature &
constantg rowing condition.
• In a glass greenhouse heat builds up &
gets trapped due to presence of CO2.
It offers plants a warm and humid
environment, even if the outside
weather is dry , windy or cold.

3. Causes of Greenhouse Effect
• Natural greenhouse gases
• Man made greenhouse gases

4. Natural Greenhouse Gases
• N2 and O2 do not have absorption in the IR light , therefore, it
has no role in setting the surface temperature of the planet .
• Greenhouse gas are efficient in absorbing IR light
• The most important greenhouse gases are :
• H20 – water vapor
• CO2- Carbon Dioxide
• CH4- Methane
• NH4 – Nitrous Oxide
• The most abundant gas in the earth’s atmosphere is water
vapor . It trapped the IR radiation.

5. Man Made Greenhouse Gases
Along with natural processes, there are some
man made greenhouse keep on increasing in
the atmosphere.
• Burning of fossil fuels , coal , oil , natural gas
etc.
• Deforestation
• Generate lot of CO2 disturbs the balance of
greenhouse gases in the atmosphere.
• Use of aerosols , hairspray cans , fridges ,
plastics etc produce a group of highly
dangerous gas called CFC which is so
harmful for atmosphere. Even small amounts
can trap a large quantites of heat , making
the earth extremely hot. This is known as
global warming.

6. Greenhouse Gas Natural sources Man-made sources
Carbon Dioxide Organic decay, Forest fires,
Volcanoes
Burning fossil fuels – car
and factory emissions,
electricity generation
Methane Wetlands, Organic decay,
Termites
Natural gas & oil
extraction, Biomass
Burning, Rice cultivation,
Cattle, Refuse landfills
Nitrous Oxide Forests, Grasslands,
Oceans, Soils, Soil
cultivation; Fertilizers
Biomass burning; Burning
of fossil fuels
Chlorofluorocarbons (CFCs) None Refrigerators; Aerosol
spray propellants; Cleaning
solvents

7. Green House Gases
Burning of
Oil, Petrol
EngineCFC
NOX +Co2
NO+Co2
NOx + Co2
CFC
Some of the energy
passes back into
space
Much of it remains trapped
in the atmosphere by the
greenhouse gases, causing
our world to heat up
NH4
Burning of
Oil, Petrol
Engine

8. • Water level rises of Bay
of Bengal
• Climate change
• Causes skin diseases
• Impediment of
agricultural production

9. •Climatechanges
•Changes in wildlifeadaptations and
cycles
•Meltingof polar icecaps
•Increase insea level
•Flooding in coastal areas
•Ocean Acidification

10. Prevention methods of the Green House
Effect:
1. Use Green technology
2. reuse and recycle
3. Take steps at Home and Office
4. Learn Smarter car usage
5. Increase Social Awareness
6. Support ‘Emissions trading’
7. Support ‘Kyoto protocol’

11. Prevention is better than cure.
We should work towards for a
greener future.
Afterthought: