The breadth of a rectangular hall is three-fourth of its length. If the area of the floor is 768 sq. m. then the difference between the length and breadth of the hall is:

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#Question id: 10661

#Section 2: Evolution

Semelparous species are those that produce all of their offspring in a single reproductive event. The survivorship curve of a population of a semelparous species would most likely resemble which of the following? 

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#Question id: 3485

#Section 2: Evolution

Optimal foraging involves all of the following except

A) maximizing energy gained by the forager.

B) minimizing energy expended by the forager.

C) securing essential nutrients for the forager.

D) minimizing the risk of predation on the forager.

E) maximizing the population size of the forager

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#Question id: 3445

#Section 2: Evolution

Which one of these concepts is not associated with sociobiology?

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#Question id: 10584

#Section 1: Ecology

The logistic equation above is used to describe the rate of change of a population, N, with time, t, where r is the intrinsic rate of increase and K is the carrying capacity. Which of the following statements is true for this equation?

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#Question id: 9566

#Section 1: Ecology

Which of the following adaptations helps kangaroo  rats conserve water?