An environmentalist on visit to your school suggested the use of three R’s to save the environment. Explain what he meant by three R’s and how you would follow his advice at home. [All India]
Three R’s to save the environment: We can reduce pressure on the environment by applying the maxim of ‘Reduce, Recycle and Reuse’ in our lives.
Reduce means ‘to use less’.
Recycle means to collect plastic, paper, glass and metal items and recycle these materials to make required things.
Reuse means ‘to use things again and again’.
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?
What is an equitable distribution of resources in a society and why is it necessary? State any two factors which work against an equitable distribution of resources. [Foreign]
Give two examples each of the following:
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
Why must we conserve our forests? List any two causes for deforestation to take place. [Delhi]
Suggest three ways to maintain a balance between environment and development to survive. [Delhi]
(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?
State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]
Which of the two is a better option, (i) to collect rainwater in ponds or artificial lakes, or (ii) to let it recharge groundwater by water harvesting? List two advantages of the option to justify your answer. [Foreign]
List three problems which arise due to construction of big dams. Suggest a solution for these problems. [All India]
State the meaning of “sustainable management”. Reuse is better than recycling. How? [Foreign]
What is the name of the process in which rainwater falling on the earth is stopped from flowing and made to percolate into the ground ?
State any four personal choices you would like to make to reduce energy consumption without affecting the quality of life or work explaining how each one of them would help you to do so. [Foreign]
(a) What is meant by rainwater harvesting ? Name some of the ancient structures used for rainwater harvesting by the rural people.
(b) What are the various advantages of water stored in ground ?
An environmentalist on visit to your school suggested the use of three R’s to save the environment. Explain what he meant by three R’s and how you would follow his advice at home. [All India]
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?
Name the rivers with which the following dams are associated :
Name the rivers with which the following dams are associated :
(a) Tehri Dam
(b) Sardar Sarovar Dam
(c) Bhakra Dam
In a village in Karnataka, people started cultivating crops all around a lake which was always filled with water. They added fertilisers to their field in order to enhance the yield. Soon they discovered that the water body was completely covered with green floating plants and fishes started dying in large numbers. Analyse the situation and give reasons for excessive growth of plants and death of fish in the lake.
Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why ?
List any two causes of our failure to sustain availability of underground water.[Foreign]
Name any four categories of people who depend on the forest resources, mentioning major needs of each category. [Foreign]
What are non-renewable resources of energy? Give two examples of such resources. [Delhi]
Give one example to show how the participation of local people can lead to the efficient management of forests.
Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why?
(a) Locate and name the water reservoirs in figures (a) and (b).
(b) Which has an advantage over the other and why?
List any four disadvantages of using fossil fuels for the production of energy. [All India]
Which fossil fuel is conserved :Which fossil fuel is conserved :
(a) when we save on electricity ?
(b) when we use bicycle for covering short distances instead of a motorbike ?
The pH of a river water sample as measured by pH paper is found to be 6. What does it tell us about water ?
Name the person who is most remembered for the protection of Khejri trees in Rajasthan.