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 and isolate the two different species, you discover that the offspring of both species are found to be nocturnal. you have discovered an example of

Character displacement.

Explanation:

Character displacement is an evolutionary divergence that occurs to two similar type of species that live or inhabit an enviroment. As with all living organisms, natural selection favors those who can change, adapt, evolve in any way (could be a behavior, morphological or physiological change) to reduce their competitive pressure for resources, increasing their chance for survival. Another very interesting fact is that, even if character displacement occurs in many species living in the same enviroment, if said enviroment is changed (just like in the example) the displacement will be undone. As in the exercise, when in the enviroment both types of beetles seek prey without the other. But, in the laboratory, both are nocturnal. This is a trait of character displacement in which if the enviroment factor is changed, it might dissapear.

- "sack of constantinople, (april 1204). the diversion of the fourth crusade from the holy land to attack, capture, and pillage the byzantine city of constantinople divided and dissipated the efforts of the christians to maintain the war against the muslims. the fourth crusade was corrupted from its purpose early on."

- "the crusades were a series of religious wars undertaken by the latin church. the first crusade arose after a call to arms in 1095 sermons by pope urban ii. the first crusade unleashed a wave of impassioned, pious catholic fury, which was of constantinople, the capital of the christian-controlled byzantine empire."

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pretty sure a is right