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Subject :NSO    Class : Class 6

A Predators may have been introduced into Tank P in April.
B All the guppies in Tank S could have been either male or female only.
C There were more guppies born in April in Tank R than Tank Q.
D The death rates of guppies in Tank P and Tank R in April were greater than the birth rates.

Ans 1:

Class : Class 6
Ans. - D

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