List any four disadvantages of using fossil fuels for the production of energy. [All India]
Disadvantages:
(a) Name the major industries which are based on forest produce.
(b) State the main aim of the management of forests and wildlife.
(c) Name the four main stakeholders in the management of forest resources.
What are non-renewable resources of energy? Give two examples of such resources. [Delhi]
Why must we conserve our forests? List any two causes for deforestation to take place. [Delhi]
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.
What is meant by sustainable management? The environmentalists are insisting upon “sustainable natural resource management”. State its four advantages. [All India (C)]
(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?
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]
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
(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 ?
(a) Locate and name the water reservoirs in figures (a) and (b).
(b) Which has an advantage over the other and why?
Suggest three ways to maintain a balance between environment and development to survive. [Delhi]
State the meaning of “sustainable management”. Reuse is better than recycling. How? [Foreign]
With which process are the following ancient structures associated ?
Kulhs, Eris, Surangams, Kattas, Pynes
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?
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]
List three problems which arise due to construction of big dams. Suggest a solution for these problems. [All India]
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
Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why?
State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]
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)]
What is a dam? Write two main advantages and two ill-effects of constructing a big dam. [Delhi(C)]
List the products of combustion of fossil fuels. What are their adverse effects on the environment? [All India]
Why are forests considered “biodiversity hot spots”? List two ways in which an individual can effectively contribute to the management of forests and wildlife. [Foreign; All India 2010]
How did ‘Chipko Andolan’ ultimately benefit the local people? Describe briefly. [Foreign]
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]
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.