Answer ALL questions
PART A – (10×2=20 marks)
1.
What
is an Abiotic Environment
2.
What
are called endangered species
3.
Mention
the effects of Ozone on plants
4.
List
the sources of marine pollution
5.
What
are renewable resources
6.
Define
the term landslide
7.
What
is rain water harvesting
8.
What
are the objectives of water act
9.
Define
the term Nuclear energy
10. What are the
sources of HIV infection
PART B (5×13=65 marks)
11. (a) (i) Define
ecosystem. Give
an account of structure and functions of grassland ecosystem. (7)
(ii) What is
biodiversity? Discuss the values and significance of biodiversity. (6)
Or
(b) (i) With a
neat sketch discuss the Nitrogen cycle (6)
(ii) What do you mean by conservation of
biodiversity? State and explain the basic
approaches to wild life
conservation. (7)
12. (a) (i) Describe
the various chemical and photochemical reactions in the atmosphere. (6)
(ii) Explain the sources, effects and
control measures of noise pollution (7)
Or
(b)
(i) Write informative notes on water treatment processes. (7)
(ii) Describe the role of individual in
the prevention of pollution. (6)
13.
(a)
(i) Describe the causes and effects of deforestation. (7)
(ii) What is land degradation? Discuss the factors responsible for land
degradation. (6)
Or
(b)
(i) What are the changes caused by agriculture and overgrazing? (6)
(ii) Discuss the production biogas.
Mention its uses. (7)
14.
(a)
(i) What are the objectives of water conservation? How is it carried out? (6)
(ii) What is an earth quake? Enumerate its effects. What measures should
be taken to
Mitigate this disaster? (7)
Or
(b) (i) Discuss the resettlement and
rehabilitation of people, its problems and concerns. (7)
(ii) Briefly discuss to salient features of wild life protection act. (6)
15.
(a)
(i) Discuss the variation of population among nations. (6)
(ii) Write the methods and strategies of imparting value education (7)
Or
(b) (i) Write
explanatory notes on women and child welfare (7)
(ii) Explain the role of information
technology in environment and human health (6)
PART C (1×15=15 marks)
16.
Write
case study report about natural disaster of earthquake. (15)
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