(1) We can reduce the use of LPG by making use of solar cooker for cooking food.
(2) We can reduce the wastage of water by repairing the leakage in taps.
(3) We should collect all the discarded household items like newspapers, broken plastic items, glass bottles etc. and send them to the respective industries for recycling to make fresh paper, plastic and glass objects.
(4) We can drink soft cold drinks available in the glass bottles instead f pearipet or metal containers as these glass bottles can be refilled and thus reused again.

(1) By silviculture-It means reforesting those lands from where large number of trees have been cut in a planned way.
(2) By taking the help of the local people in conserving the forests, e.g., sal forests of Arabari forest range of West Bengal were conserved with the help of the local people by the Forest Department of that state.
(3) Encouraging the people not to overuse the materials obtained from the forests, e.g., timber.
(4) Indiscriminate felling of trees for commercial gains should be stopped.
(5) Overgrazing in forests should be discouraged and forest fires should be prevented.

(i) Watershed management emphasizes scientific soil and water conservation in order to increase the biomass production. It strictly maintains the water quality.|
(ii) Watershed management develops primary resources of land and water, to produce secondary resources of plants and animals for use in a manner which will not cause ecological imbalance.
(iii) watershed management increases the production and income of the watershed community.
(iv) It mitigates droughts and floods and increases the life of the downstream dam and reservoirs.

(1) Fossil fuels cause pollution.
(2) They also cause acid rain.
(3) They disturb ecology.
(4) They cannot be reused, i.e. they are non-renewable.

(1) Follow the principle of three R's- reduce, recycle and reuse.
(2) Plant more trees.
(3) Use public transport, school bus and car pools.
(4) Switch off unnecessary lights and fans, thereby save electricity.

(i) Water harvesting means capturing rainwater where it falls or capturing the run off in a local for future use.
(ii) Two water harvesting structures are Khadins in Rajasthan and Kulchas in Himachal Pradesh.

Both the energy sources coal and petroleum take millions of years for their formation. As these resources are being utilised at a much faster rate than their formation, they will be exhausted in the near future, hence they need to be conserved.

Paper, rexin bag, blade, pen, plastic box, scale, eraser, compass and dividers (metallic), steel lunch box and steel spoon. Paper, blade, plastic box, eraser, compass, steel lunch box and steel spoon can be recycled.

In my town, the water supply from the municipal corporation through pipes. Most of the households have installed hand pump in their backyard. Some of the people use electric operated pumps to lift water. The majority of the people rely on manual labour to lift ground water. The water supply is not available to all the residents.

The word CFLs refers to Compact Fluorescent Lamps. This is because, CFLs consumes about one fifth of energy compared to incandescent bulb. CFL produce less heat and hence is environment friendly.

Plastic bags are non-biodegradable which can not be broken down into non-poisonous substances in nature.
Plastic bags are the main cause of sewer blockages as plastic bags are not decomposed by micro-organisms.
Plastic bags if eaten by stray animals can block their alimentary canal.
Two alternatives:
(1) We should take our own jute or cloth bags while going for purchasing articles from the market.
(2) Disposable paper cups should be used for serving tea in trains instead of plastic cups.
(3) Shopkeepers can use paper bags instead of plastic bags.

(a) recharging the ground water
(b) can be used for irrigation
(c) treated municipal water can be used for washing cars, watering the gardens
(d) certain pollutants in sewage water can be become fertiliser for various crops.

Reduce means to use a material/commodity in lesser quantity, e.g electricity and water. Reduce means a material that is used once is collected and sent back to a manufacturer so that they can make some other useful material from it. e.g., plastic cups and buckets, glass tumbler, paper, metal objects.
Reuse means using a thing over and over again instead of throwing it away. It does not involve the process of recycling either in small or large scale: e.g., used envelopes, plastic carry bags, bottles of jam.