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I'm self-employed http://www.sfbbm.se/buy-prevacid-uk.pdf evident buy prevacid uk shrill There’s a branch of evolutionary psychology known as life-history theory, which suggests that since a human’s energy is limited, there is always a competition for resources between mating and parenting. Consider the steep decline in sex that parents of young children often experience because of sheer exhaustion. Life-history theory suggests a similar type of equation happens on a specieswide scale: energy either goes to raising the young or making more young ones. “Collectively, these data provide the most direct support to date that the biology of human males reflects a trade-off between mating and parenting effort,” claims the study.