1. Greenhouse effect By Tahira yasmeen

2. How we get heat We get heat from sun We get heat from fire From candle From bulb

3. How heat reaches to us Air is mixture of gases Some of the gases in air trap heat One of the gas which trap heat is co 2 So temperature of the earth is increasing due to carbon dioxide gas

4. If there is less carbon dioxide gas The temperature of the earth will decrease Oceans will freeze There will be no life Plants and animals will die

5. Greenhouse effect Increasing temperature of the earth due to carbon dioxide gas is called greenhouse effect

6. Thank you