UPSC 2013 CDS 1 English Paper

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RECONSTRUCTING PASSAGE
Directions (Qs. 19 to 27): In the following items, each passage consists of six sentences. The first and sixth sentence are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up. These are labelled P,Q,R and S. Find out the proper sequence of the four sentences and mark your answer accordingly on the Answer sheet.
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Question : 21 of 120
 
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S1: Plants need carbon for building the tissue of their bodies.
S6: Thus through a complex process called photosynthesis, plants receive their requirements from the soil and Sun.
P: The breaking up of carbon dioxide into its components requires energy, which they derive from the Sun.
Q: Plants' other needs of nutrients are derived from the soil and water through their roots.
R : They derive this carbon from the carbon dioxide in the air.
S : They break up the carbon dioxide, absorb the carbon and discharge oxygen into the air for animals to breathe.
The proper sequence should be
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