idadi ya watu duniani

‎Utafiti kuhusu vinasaba vya binadamu unaonyesha kuwa kuna kipindi katika historia ambapo binadamu walikaribia kutoweka kabisa. ‎ ‎Takribani miaka 70,000 hadi 75,000 iliyopita, idadi ya watu duniani ilishuka kwa kasi sana na inakadiriwa idadi ya watu duniani ilibaki kati ya 1000 hadi 10,000. ‎...

Hili nijambo la kushangaza lakini ndio ukweli , pamoja na high mortality rate ya Me lakini bado idadi inakaribiana sana , kwa nchi na nchi ukikuta Me wamezidi basi haizidi 2% na ukikuta Ke wamezidi hawazidi 1% hata hivyo Science inaonesha chance kubwa ya kuzaliwa mtoto wakiume kuliko wa kike...

97% of Countries Will Soon Be Unable to Sustain Populations as Fertility Rates Drop Story at a glance A report published in The Lancet predicts that by 2100, the global infertility problem will be so severe that 97% of countries will be unable to sustain their populations. According to the...