Ngophuhliso oluqhubekayo lwesayensi kunye nobuchwepheshe, izikhongozeli zenitrogen ezingamanzi zidlala indima ebaluleke kakhulu kuzo zonke iinkalo zobomi.Kwintsimi yebhayoloji, zisetyenziselwa ukugcinwa kwexesha elide lokugonya, iiseli, ibhaktheriya, kunye namalungu ezilwanyana, ezivumela ...
Funda ngokugqithisileyo