Why should we conserve forests and wildlife?
We should conserve forests and wildlife for preserving our environment. They together maintain an ecological balance Of nature. We should conserve them for our economic and social growth and to meet our material aspirations.
State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]
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.
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
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]
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
Suggest three ways to maintain a balance between environment and development to survive. [Delhi]
Apart from the availability of forest products, name two other things which are affected by the destruction of forests.
(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?
(a) State the advantages of constructing dams across the rivers.
(b) Describe some of the problems associated with the construction of dams.
(a) Name any five sources of water (other than rivers)
(b) Describe how, the water of river Ganga has been highly polluted.
Explain why, despite good rains, we are not able to meet the demand for water of all the people in our country.
Why must we conserve our forests? List any two causes for deforestation to take place. [Delhi]
Give two examples each of the following:
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.
List the products of combustion of fossil fuels. What are their adverse effects on the environment? [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 ?
Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?
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]
State the meaning of “sustainable management”. Reuse is better than recycling. How? [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]
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.
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 ?
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)]
How did ‘Chipko Andolan’ ultimately benefit the local people? Describe briefly. [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 whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.