The document discusses the greenhouse effect and global warming. It explains that greenhouse gases like carbon dioxide and methane trap heat in the atmosphere, causing the planet to warm up. Some effects of climate change include risks to human health from heat waves, threats to ecosystems as plants and animals struggle to adapt to changes, rising sea levels from melting ice, and problems for global food supply as temperatures shift. While warming may have some benefits, overall climate change poses serious challenges that will affect people worldwide. The document stresses the importance of reducing greenhouse gas emissions from human activities to limit the impacts of global warming.

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2.  Explain What is the Greenhouse Effect.
 Important of Greenhouse Effect.
 Greenhouse gases.
*Where do all these gases come from?
 Global Warming.
*Human Health.
*Ecological System.
*Sea Level Rise.
*Crops and Food Supply.
 Climate Change.
OBJECTIVES:
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3.  The greenhouse effect is the rise in
temperature that the Earth
experiences because certain gases in
the atmosphere trap heat from the
sun’s rays.
 Sunshine enters the Earth’s
atmosphere passing through the
blanket of greenhouse gases.
 What is the Greenhouse Effect?
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4.  Important of Greenhouse Effect.
 Without the greenhouse effect, the Earth would not be warm
enough for humans to live.
But
 if the greenhouse effect becomes stronger, it could make the Earth
warmer than usual.
 Even a little warming
causes problems for plants
and animals.
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5.  Greenhouse Gases
• Few greenhouse gases :
Water
Vapor
Carbon
dioxide
Nitrous
Oxide CFCs
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6. Burning fossil fuels and wood
Widespread use of fertilizers
Produced by bacteria living in swampy areas.
Waste in landfills
Aerosol sprays
Making foam packaging
Coolants in fridge and air cons Etc.;
*Where do all these gases come from?
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7.  Even a small increase in temperature over a long time can
change the climate.
 The average global temperature has increased by almost
1° F over the past century.
 Scientists expect the increased an additional 2°to 6°F
over the next hundred year.
 When the climate changes, there may be big changes in
the things that people depend on.
 Global Warming
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8.  It is important to understand that scientists don’t know
for sure what global warming will bring.
 Some changes may be good.
Eg. If you live in a very cool climate , warmer temperatures might
be welcome.
 Global Warming
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9. • Changes in some places will not be
good at all.
Human Health
Ecological Systems (Plants and
animals)
Sea Level Rise
Crops and Food Supply
 Global Warming
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10.  Heat stress and other heat related health
problems are caused directly by very warm
temperatures and high humidity.
 Heat stress – A variety of problems associated
with very warm temperatures and high
humidity eg. Heat exhaustion and heat stroke.
*Human Health
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11. • Plants and animals
Climate change may alter the world’s habitats.
All living things are included in and rely on these places.
Most past climate changes occurred slowly, allowing plants
and animals to adapt to the new environment or move
someplace else.
Plants and animals may not be able to react quickly enough
to survive if future climate changes occur as rapidly as
scientists predict.
*Ecological System
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12. Global Warming may make the sea level become
higher. Why?
o Warmer weather makes glaciers melt.
o Melting glaciers add more water to the ocean.
o Warmer weather also makes water expand.
o When water expands in the ocean, it takes up more space and the
level of the sea rises
*Sea Level Rise
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13. Global warming may make the
Earth warmer in cold places.
People living in these areas may
have the chance to grow crops in
new areas.
But global warming might bring
lacks to other places where we
grow crops.
*Crops and Food Supply
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14. Global warming will lead to an increase in the evaporation of
water  more water vapor.
With more water vapor, more rain fall is expected.
But it is not evenly distributed:
Dry areas  severe lack condition, water shortage and
heat waves occurs
Wet areas  floods and avalanches
 Climatic Change
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15. • Other problems may arise:
Destroy food crop → rice, wheat and
corn
Affect animals → need to migrate
Encourage growth of weed and pests →
may lead to diseases like dengue fever,
cholera which are deadly.
 Climatic Change
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16.  There are many little things that we can do to make a difference
to reduce the amount of greenhouse gases that we put into the
atmosphere.
 Many greenhouse gases come from things we do every day.
 Driving a car or using electricity is not wrong. We just have to be
smart
• Eg. Try carpooling
What can we do about it?
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17.  Environmental Crisis will affect us:
Health
o Air pollution → asthma or other respiratory problems
o Water pollution → poison our food source e.g fish
o Destruction of forest → lost of possible medical solutions
Property
o Floods → property lost
o Pollution → destroy streets and beaches
o Soil erosion → desertification, lost of farm lands
 Summary
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18. • Environmental Crisis will affect us:
Economic Costs
o Lost in terms of monetary values, industry and businesses.
o Money need to be spent to restore the original
o Public Health Services need to be provided by the
government.
 Summary
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19. Wikiphttps://en.wikipedia.org/wiki/Green
house_effectedia
 Reference
http://www.slideshare.net
 YouTube
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