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In this section, each item consists of six sentences of a passage. The first and sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet.S1 : Ecology, history and geography determine the distribution of organisms.S6 : Others prefer to interpret biogeographical history through vicariance (range-splitting) events.P : Some historical biogeographers are interested in finding centre-of-origins.Q : Most species distributions result from a combination of all these factors.R : But biogeographers tend to specialise in ecological aspects (ecological biography or historical aspects).S : Ecological biogeographers are interested in the effects of environmental factors.The correct sequence should be:

A. Q R S P
B. R Q P S
C. P Q R S
D. S P R Q
Answer» B. R Q P S


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