Ilanga likusekela kanjani ukuphila emhlabeni?
Ilanga yilona elisekela ukuphila emhlabeni. Inikeza ukukhanya okudingekayo ukuze izitshalo zikhule ngokusebenzisa i - photosynthesis. Ungumthombo oyinhloko kaVitamin D kubantu, futhi ungumthombo wamandla esingawathola emhlabeni futhi siwenze ube ugesi ongasetshenziswa ngokusebenzisa amapaneli elanga. Yilokho okubangela isimo sezulu nesimo sezulu emhlabeni. Izilwane nezitshalo zincike ngokuphelele elangeni ngoba lakha ukudla esikudingayo ukuze siphile.