harvesting? . What are the advantages of using biogas? .
What are the environmental effect caused by sewage? . What are the consequences of deforestation? V II.
Long answer questions . How does rainwater harvesting structures recharge ground water? . How will you prevent soil erosion?
. What are the sources of solid wastes? How are solid wastes managed? .
Enumerate the importance of forest. . What are the consequences of soil erosion? .
Why is the management of forest and wildlife resource considered as a challenging task? V III. Assertion and Reasoning In each of the following question a statement of assertion(A) is given and a corresponding statement of reason (R). Of the four statements given below mark the correct answer.
a. Both assertion and reason are true and reason is correct explanation of assertion. b. Both assertion and reason are true but reason is not the correct explanation of assertion.
c. Assertion is true but reason is false. d. Both assertion and reason are false.
. Assertion: Rainwater harvesting is to collect and store rain water. Reason: Rainwater can be directed to recharge the underground water source. IX.
Higher Order Thinking Skills (HOTS) . Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why? .
What are the objectives for replacing non-conventional energy resources from conventional energy resources? . Why is the Government imposing ban on the use of polythene bags and plastics? Suggest alternatives.
How is this ban likely to improve the environment? X. Value based questions . Why is it not possible to use solar cells to meet our energy needs?
State three reason to support to your answer. REFERENCE BOOKS . Ghatwal G.T. and Harish Sharma, .
A Text Book of Environmental Studies’, Himalaya Publishing House. . P. D.
Sharma, . Ecology and Environment, Rastogi Publications, Meerut. INTERNET RESOURCES . .
energy-guides/ -ways-to-save-energy. html . How would you dispose the following wastes? a.
Domestic wastes like vegetable peels b. Industrial wastes like metallic cans Can the disposal protect the environment?