The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?

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#Question id: 10830

#Section 1: Ecology

Which of the following helps a prey species avoid being detected by a predator?

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#Question id: 8851

#Section 2: Evolution

Why is territoriality an adaptive behavior for songbirds maintaining populations at or near their carrying capacity?

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#Question id: 5374

#General Aptitude

The average of 11 result is 50 . if the average of first 6 result is 49 and that of last 6 results is 52,find the sixth result .

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#Question id: 3294

#Section 2: Evolution

Which one of these processes describes bottleneck effect?

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#Question id: 12448

#Section 1: Ecology

When members of a population move out of a given area, it is called