(a) Locate and name the water reservoirs in figures (a) and (b).
(b) Which has an advantage over the other and why?
(a) Water reservoir in Fig (a) is pond while in Fig (b) it is underground water body.
(b) Fig (b), i.e. Groundwater has more advantages than pond water because the advantages of water stored in the ground are many as follows:
(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?
Why must we conserve our forests? List any two causes for deforestation to take place. [Delhi]
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
(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.
Give two examples each of the following:
What are non-renewable resources of energy? Give two examples of such resources. [Delhi]
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]
State the meaning of “sustainable management”. Reuse is better than recycling. How? [Foreign]
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 ?
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.
Give one example to show how the participation of local people can lead to the efficient management of forests.
What is meant by sustainable management? The environmentalists are insisting upon “sustainable natural resource management”. State its four advantages. [All India (C)]
List any four disadvantages of using fossil fuels for the production of energy. [All India]
Explain briefly, how rainwater harvesting is done from open spaces around the buildings in city areas.
(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?
List any two causes of our failure to sustain availability of underground water.[Foreign]
How would these advantages differ from the advantages of using a long-term perspective in managing our resources?
How did ‘Chipko Andolan’ ultimately benefit the local people? Describe briefly. [Foreign]
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
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 ?
Name the person who is most remembered for the protection of Khejri trees in Rajasthan.
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.
State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]
Suggest three ways to maintain a balance between environment and development to survive. [Delhi]
State an instance where human intervention saved the forests from destruction. [Delhi(Q)]
List the products of combustion of fossil fuels. What are their adverse effects on the environment? [All India]
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]
Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why ?
Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why?