Page 5 - 2.Lesson Notes-Water Harvesting, Coal and Petroleum

atmosphere is going to increase, leading to intense global warming.

Steps for conservation of energy resources are:
(i) Save electricity, fossil fuels and water.
(ii) Use energy efficient electrical appliances to save electricity.
(iii) Use pressure cooker for cooking food.
(iv) Use solar cookers.
(v) Encourage the use of biogas as domestic fuel.
(vi) Fuel efficient motor vehicle should be designed to reduce consumption of
petrol and diesel.

NCERT Book Solutions

Q1-What changes would you suggest in your home in order to be
environment-friendly?
Ans-We can become eco- friendly by making the following changes in our habits-
Switching off the unnecessary electronic equipment.
 Using the principle of 3R's i.e. Reduce, Reuse and Recycle.
 Using unleaded petrol in vehicles.
 Using local transport like buses or trains.

Q2-Can you suggest some changes in your school which would make it
environment-friendly?
Ans-School management can do the following to make school environment- friendly:
 Growing more and more trees in and around the school.
 Employing rain-water harvesting system in school.
 Maintaining a small park in the school premises
 Encouraging students to become environment friendly.

Q3- We saw in this chapter that there are four main stakeholders when it
comes to forests and wildlife. Which among these should have the authority to
decide the management of forest produce? Why do you think so?

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