What is global warming?• Rise in the average climate of the Earth.• Harmful greenhouse gases: carbon dioxide,

water vapour, nitrous oxide and methane.• Trapped heat and light from the sun causes Earth’s temperatureto rise.

Greenhouse Effect

Contributing factors

What causes global warming?

• Pollution: land, air and water• Electricity• Fossil fuel burning: oil, petroleum• Sources of electricity: T.V., refrigerators,

washing machines, lighting, air conditioners, vehicles and so on.

Direct Manifestations

Impacts• Ozone layer depletion • Rising sea levels• Melting ice glaciers• Heavy floods• Periods of unusually warm weather• Food shortage – famine• Oceans warming up• Health problems: lungs and skin related diseases • Acid rain – destroys everything it touches

Solutions – what can be done?

• Stop cutting trees, burning forests and introduce environmental-friendly products.

• Discourage use of old vehicles. Fine anyone found to be using old cars.

• Impose heavy fines on people and industries for causing pollution.

• Plant more trees for absorption of CO2.

Continued…

• We can reduce our demand for fossil fuels• Switch off unnecessary lighting.• Recycle • Government should create awareness. • Encourage others to participate in attempts to

reduce global warming. Immediate precautionary measures should be taken before Mother Earth starts cleansing herself of anything that is creating a misbalance.

References• http://library.thinkquest.org/CR0215471/glob

al_warming.htm• http://environment.about.com/od/globalwar

ming/tp/globalwarmtips.htm

Thank you