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]
To allow rainwater to recharge groundwater by water harvesting is the better option. Its advantages are:
(i) Groundwater does not evaporate.
(ii) Groundwater does not provide breeding ground for mosquitoes.
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?
Give two examples each of the following:
(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?
State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]
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]
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.
Suggest three ways to maintain a balance between environment and development to survive. [Delhi]
Why must we conserve our forests? List any two causes for deforestation to take place. [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
Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?
Give one example to show how the participation of local people can lead to the efficient management of forests.
(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 ?
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 ?
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.
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]
What is meant by sustainable management? The environmentalists are insisting upon “sustainable natural resource management”. State its four advantages. [All India (C)]
What are non-renewable resources of energy? Give two examples of such resources. [Delhi]
Apart from the availability of forest products, name two other things which are affected by the destruction of forests.
With which process are the following ancient structures associated ?
Kulhs, Eris, Surangams, Kattas, Pynes
Explain briefly, how rainwater harvesting is done from open spaces around the buildings in city areas.
(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.
Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why?
List any two causes of our failure to sustain availability of underground water.[Foreign]
What is a dam? Write two main advantages and two ill-effects of constructing a big dam. [Delhi(C)]
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]
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]