We know that 75% of solar energy reaching the earth, is absorbed by earth’s surface increases its temperature. The rest of heat radiates back to the atmosphere. Some of the heat is trapped by gases such as CO, CH This causes global warming. (a) Suggest some measures to decrease CO gas in the atmosphere. (b) Give a method to save ozone layer. (c) Will the use of solar energy solve our problems? Comment.
(a) Using CNG as a fuel, using public transports, electric cars and bicycles and avoiding burning of dry leaves, plastic bags etc. (b) Banning CFCs used in refrigerators, AC etc., and using less amount of diesel and petrol. (c) Yes. Solar energy reduces pollution. By making green building, a lot of natural light and natural cooling and heating takes place which save lot of energy and environment.
