Six bells commence tolling together and toll at intervals of 2,4,6,8,10,and 12 seconds respectively . In 30 minutes , how many times do they toll together ?

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#Question id: 10666

#Section 2: Evolution

In a experimental invertebrate population the birth rate is 1200 per 1000 and death rate is 300 per 1000 per generation. Initial population size is 10000. What is value of NET reproductive rate?

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#Question id: 12323

#Section 1: Ecology

Which of the following is considered by ecologists a measure of the ability of a community either to resist change or to recover to its original state after change?

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#Question id: 11901

#General Aptitude

If the length of the diagonal AC ofa square ABCD is 5.2 cm, then the area of the square is :

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#Question id: 10648

#Section 2: Evolution

Which statements about K are correct?

I) K varies among populations.

II) K varies in space.

III) K varies in time.

IV) K is constant for any given species.

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#Question id: 3305

#Section 2: Evolution

Co-evolution is related to