Taxa de natalidade apresenta declínio acentuado e representa risco para a perpetuação da espécie humana.
A população mundial viveu seu pico de natalidade na década de 60. Em 1963 cada mulher tinha, em média, 5,3 filhos. Entretanto, nas décadas seguintes, este número apresentou constante declínio e chegou, em 1989, a 3,3 filhos. Nos anos 90, mais queda. Ao longo dos anos 2000 também. A permanente redução fez com que em…
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