Question

Section - A
I. Read the passage carefully and answer the following questions :-

Evolution of a race, or species, and its eventual extinction is a natural process, just as natural as the cycle of birth and death.
While human being have been able to extract themselves from this process, the animal kingdom is still subject to it. It is a matter of belief that almost two hundred species of mammals and the winged animals have become extinct during the past two- three millennia.


What are the causes of this extinction ? Natural selection, for sure...but, man has also contributed considerably towards wiping
out some species. The indiscriminate use of nature by the latter has destroyed important habitats: the haphazard disposal of
waste has created instances of deadly pollution... these are just a couple from a long list of human intervention in the extinction
of species. However, not all extinction can be attributed to the man. Natural causes, like a sudden shift or change in the
environment can also result in extinction. The dinosaurs are believed to have become extinct due to a sudden lowering of the temperature!


Then, we have the epidemics and sudden break of diseases. Just as these affect human beings, so do they impact the fauna. Excessive and indiscriminate killing of animals by poachers and hunters result in the risk of their extinction as well. Tigers are killed for their skin and elephants for ivory. Thanks to recent initiatives by animal lovers, such activities are being very closely
monitored. Opportunities of protecting the wild life are being created and implemented.


Questions :-
a) Why do animals become extinct ? Cite at least two reasons.

b) How has man contributed to the extinction of species ? Support your answer with at least one example.

c) What is believed to be the possible reason for the extinction of the dinosaurs?

d) Say whether the following sentence is true or false :- Epidemics impact the fauna.
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Answer 1

Then, we have the epidemics and sudden break