Nekuputika huwandu hwevanhu uye kubuda kwezvitsva hofori zvehupfumi, kukanganisa kwevanhu pa nharaunda inowedzera nemazuva. Kusvika pakuderera kwekuti kuneta kweimwe resources natural, inowedzerwazve uye isingadzorekezve.
La huwandu hwevanhu isingaregi: patiri isu, kunyanya kumanikidza kwatinoisa pane edu resources zvakasikwa. Munguva pfupi tichasvika zviuru mazana manomwe zvevagari ... zuva rega rega vanhu mazana maviri ezviuru vanozvarwa vanowedzerwa kuhuwandu hweiyo chizvarwa pasirese (kuverenga kuzvarwa uye kufa).
Zvinotarisirwa kuti mugore ra2050 pachave nevanhu zviuru mazana mapfumbamwe, uye muna 9.000 pakanga paine yambiro impacto zvipenyu yehunhu papasi, iyo yakawedzera nemaviri mumakore makumi mana apfuura, nekuda kwekuwedzera kwevanhu uye kuwedzera mukati kushandiswa mumwe nemumwe.
Kana tikatora gore ra1963 sereferenzi, iyo kubudisa zveindasitiri pasirese yakawedzera zvakasarudzika, kunyangwe paine chokwadi kuchinja-chinja nekuda kwedambudziko remafuta uye matambudziko emari. Chiyero che kukura Pamakore makumi maviri nemashanu apfuura anga ari 25% paavhareji yegore (yakawedzera nemaviri mumakore makumi maviri nemashanu). Chiyero chekukura pa mugari, zvisinei, zvainonoka nekuda kweiyo kukura huwandu hwevanhu: chete 1,3% pagore (yakawedzera zvakapetwa kaviri mumakore makumi mashanu nemashanu).
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