PART A — (10 x 2 = 20 marks)
1.What are the environmental impacts of ground water usage?
2.Differentiate between deforestation and forest degradation.
3.Explain the significance of the biomass energy.
4.What is mining? State different methods of mining.
5.Define Water logging.
6.Name the four Ecosystems.
7.What is desertification?
8.How does a biome differs from an ecosystem?
9.Explain endangered species.
10.Define (i) Genetic diversity (ii) Species diversity.
PART B
11.“Environmental damages caused by mining last long after the mine has closed”. Explain. (8)
(OR)
12.(a) Write briefly on types of food chain. (b)Explain ecological pyramids (8)
13.(a) Give and account of water crisis and conflicts over water (8)
(b) Describe the main factors of land degradation (8)
(OR)
14.(a) Describe various renewable source of energy. (10)
(b) Write briefly on Hydrologic cycle. (6)
15.(a) What are the causes for loss of Biodiversity? (4)
(b) Why bio diversity is rich in the tropics? (4)
(c)Describe the four kinds of diversity. (4)
(d)What roles do autotrophs and heterotrophs play in the ecosystem? (4)
(OR)
16.(a) Explain the process of succession in a newly formed pond. (8)
(b) Describe the term hot pot in biodiversity. (8)
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