As you study two closely related predatory insect species, the two-spot and the three-spot avenger beetles, you notice that each species seeks prey at dawn in areas without the other species. However, where their ranges overlap the two-spot avenger beetle hunts at night and the three-spot hunts in the morning. When you bring them into the laboratory, their offspring behave in the same manner. You have discovered an example of

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#Question id: 12350

#Section 1: Ecology

What is the approximate current growth rate of the human population?

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#Question id: 12689

#General Aptitude

The ratio of the area of a squareto that of the square drawn on its diagonal is :

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#Question id: 11183

#Section 4: Behavioural Ecology

Which of the following is an example of a density-independent mechanism?

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#Question id: 11765

#Section 2: Evolution

The population density of a particular insect species was determined to be 15,000 adults per hectare in the summer of 1996, 21,000 adults per hectare in the summer of 1997, and 29,400 adults per hectare in the summer of 1998. Based on these population estimates, what is your estimate of λ, the annual rate of geometric growth?

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#Question id: 4605

#Section 2: Evolution

Over long periods of time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. Whales have lost their hind limbs. How can natural selection account for these losses?