The profit / loss calculation is a challenging task, with many confusing problems and some ethical constraints when considering human experimentation.
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People can be quite picky. Words that we are always in love and always happy. But evolution is not an excruciating force; is this selectivity not a great time and energy loss when it comes to multiplication?
What if all this has an evolutionary point? A new study may be the answer to this question.
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Researchers have used the advantage that zebra finches are similar to human beings, such as monogamous lifetime, sharing the burden of being a parent. The female finches are taking an individual stand in the selection of spouses, while they make a compromise among the other females, who are the sweetest male finches.
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