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06000CE371122001

PART (^

Answer any two full questions, each carries 20 marks.
Explain overgrazing? And how it affects the ecological sustenance?
How modern agricultural practices influence the stability of the land
ecosystem?
Explain hearing loss? How is it measured? Differentiate between threshold pain
and threshold of hearing. What is the aim of NISS(National Initiative for Safe
Sound)?
What are the different levels of sound? How is it measured?
Explain the different ways in which an individual can prevent the
environmental pollution?

Give the sources and importance of radioactive pollution.

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