Why should fossil fuels like coal and petroleum be used judiciously ?
We should use fossil fuels judiciously because:
Suggest any four changes that you would like to incorporate in the life style of students of your age to move towards a sustainable use of available resources. [All India Delhi 2008(C)]
List any four disadvantages of using fossil fuels for the production of energy. [All India]
How would these advantages differ from the advantages of using a long-term perspective in managing our resources?
Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?
Name any four categories of people who depend on the forest resources, mentioning major needs of each category. [Foreign]
Give two examples each of the following:
What are non-renewable resources of energy? Give two examples of such resources. [Delhi]
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]
How did ‘Chipko Andolan’ ultimately benefit the local people? Describe briefly. [Foreign]
State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.
How do advantages of exploiting natural resources with short-term aims differ from the advantages of managing our resources with a long ¬term perspective? [Foreign]
What is meant by sustainable management? The environmentalists are insisting upon “sustainable natural resource management”. State its four advantages. [All India (C)]
Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why ?
Give one example to show how the participation of local people can lead to the efficient management of forests.
Suggest three ways to maintain a balance between environment and development to survive. [Delhi]
List any two causes of our failure to sustain availability of underground water.[Foreign]
What is meant by exploitation of resources with short-term aims? List its four advantages. [Delhi(C)]
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 ?
(a) Name any five sources of water (other than rivers)
(b) Describe how, the water of river Ganga has been highly polluted.
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.
(a) Locate and name the water reservoirs in figures (a) and (b).
(b) Which has an advantage over the other and why?
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
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]
Fill in the following blanks with suitable words :Fill in the following blanks with suitable words :
(a) LPG is a ……………fuel but biogas is not a…………. fuel.
(b) Glaciers are a source of…………………..
(c) One of the main aim of management of forests and wildlife is to conserve the……………….which we haveinherited.
(d) Khadin is a traditional………………………..harvesting system in Rajasthan.
(e) When a fuel burns in an insufficient supply of air, then some poisonous gas called ……………………….. is also produced.
Explain briefly, how rainwater harvesting is done from open spaces around the buildings in city areas.
(a) State the advantages of constructing dams across the rivers.
(b) Describe some of the problems associated with the construction of dams.