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’.
(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.
(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 ?
What are non-renewable resources of energy? Give two examples of such resources. [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 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 ?
State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]
With which process are the following ancient structures associated ?
Kulhs, Eris, Surangams, Kattas, Pynes
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
State an instance where human intervention saved the forests from destruction. [Delhi(Q)]
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 person who is most remembered for the protection of Khejri trees in Rajasthan.
How would these advantages differ from the advantages of using a long-term perspective in managing our resources?
(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]
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
List any two causes of our failure to sustain availability of underground water.[Foreign]
Give two examples each of the following:
List the products of combustion of fossil fuels. What are their adverse effects on the environment? [All India]
How did ‘Chipko Andolan’ ultimately benefit the local people? Describe briefly. [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.
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
What is meant by exploitation of resources with short-term aims? List its four advantages. [Delhi(C)]
Name any four categories of people who depend on the forest resources, mentioning major needs of each category. [Foreign]
List any four disadvantages of using fossil fuels for the production of energy. [All India]
List three problems which arise due to construction of big dams. Suggest a solution for these problems. [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]
Name the bacteria whose presence in water indicates the contamination with disease-causing micro-organisms.