Climate change  is a broader term that refers to long-term changes in climate, including average temperature and precipitation.

In the atmosphere, “greenhouse” gases trap some of this heat, and the rest escapes into space. The more greenhouse gases are in the atmosphere, the more heat gets trapped.

Global warming  is the increase of the Earth’s average surface temperature due to a build-up of greenhouse gases in the atmosphere.

GREENHOUSE EFFECT• The “greenhouse effect” is the warming that happens when certain gases in Earth’s atmosphere trap heat. These gases let in light but keep heat from escaping, like the glass walls of a greenhouse.

Nitrous oxide

Water

Carbon dioxide

Methane

Sulfur hexafluoride

The gas responsible for the most warming is carbon dioxide, also called CO2 . Different greenhouse gases have very different heat-trapping abilities. Some of them can even trap more heat than CO2. A molecule of methane produces more than 20 times the warming of a molecule of CO2. Nitrous oxide is 300 times more powerful than CO2. Other gases, such as chlorofluorocarbons, have heat-trapping potential thousands of times greater than CO2. But because their concentrations are much lower than CO2, none of these gases adds as much warmth to the atmosphere as CO2 does.

The planet is warming, from North Pole to South Pole, and everywhere in between. Globally, the mercury is already up more than 1 degree Fahrenheit (0.8 degree Celsius), and even more in sensitive Polar Regions. And the effects of rising temperatures aren’t waiting for some far-flung future. They’re happening right now. Signs are appearing all over, and some of them are surprising. The heat is not only melting glaciers and sea ice; it’s also shifting precipitation patterns and setting animals on the move.

Sea levels are expected to rise between 7 and 23 inches (18 and 59 centimeters) by the end of the century, and continued melting at the poles could add between 4 and 8 inches (10 to 20 centimeters).

1. Reduce your use of fossil fuels2. Protect native forests as "carbon storehouses"3. Help plant native trees in urban and deforested areas

WHAT IS AIR POLLUTION?Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere.

1. Volcanic eruptions2. Wind erosion3. Pollen dispersal4. Natural radioactivity

1.Environmental Effects2.Health Effects

3.Acid Rain4.Loss in Vegetation

Reuse Reduce &Recycle

The only way of Reducing Pollution

1. Absorbs over a ton of harmful greenhouse gases over its lifetime.2. Produces enough oxygen for four people every day (Tree Canada Foundation)3. Provides the equivalent cooling effect of ten room-size air conditioners operating 20 hours a day.4. Provides an estimated $273 of environmental benefits in every year of its life.

• Warming of the climate system is completely clear.

• Human-caused warming over last 30 years has likely had a visible influence on many physical and biological systems .

• Continued GHG emissions at or above current rates would cause further warming and induce many changes in the global climate system during the 21st century that would very likely be larger than those observed during the 21h century.”

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