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Increase in human population was first observed when there was a change from hunter-gatherer man to ______ man.
Describe the degradation of an aquatic ecosystem due to the eutrophication.
How do sub-surface mining and surface mining influence the environment?
Write a detailed note on the productivity of an ecosystem.
Describe the atomic structure of germanium. What do you understand by three level laser? Explain.
What do you mean by the term species diversity? How would you determine the Shannon’s Index of species diversity?
What do you mean by the term ecology? What are the fundamental concepts of ecology?
Describe the seasonal changes which occur in the thermal structure of a lake?
How does the present day atmosphere distinct from the primitive atmosphere of earth?
What a detail explanation of pollution and how is related with electric and magnetic fields explained all along with health effect caused by it.
What are the various sources of radioactivity in the environment?
What are the different manners of accomplishing noise control?
Illustrate the noise pollution measured? Describe the standards of noise pollution in most of the countries?
Describe the main effects of atmospheric pollutants on human health.
Illustrate the primary and secondary pollutants? Give illustrations.
What do you mean by Pollutants? Give various types of water pollutants that lead to pollution of water.
Water is the water borne diseases and describes how they spread?
What do you mean by energy conservation? Propose the ways to conserve energy.
What do you mean by the term solar cell? Explain the merits and demerits of the solar cell system?
Illustrate some attractive characteristics of biomass energy?
What is meant by the term renewable energy resources? Describe in brief.
What is cetane number? Describe the relation between cetane and chemical constituent of fuel.
Write down the chemical composition of soda glass and two applications. What is enamel? Write down the names of constituents of enamels.
Describe Husenberg’s principle of Uncertainity. Write down advantages of synthesizing nano material using So-gelmethod?
Explain physical mechanism behind Meissner effect. Describe London’s theory of superconductivity.