Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Yanayin duniya shine babban mahimmin abu a cikin kiyaye yanayin halittu. Ƙananan ƙwayar gas da ke kewaye da duniya an riƙe shi a wuri ta hanyar nauyi. Iska galibi nitrogen ne, oxygen, tururin ruwa, tare da ƙananan adadin carbon dioxide, argon, da dai sauransu. Matsalar yanayi tana raguwa a hankali tare da tsawo. Ozone layer yana taka muhimmiyar rawa wajen rage yawan hasken ultraviolet (UV) wanda ya isa saman. Kamar yadda DNA ke lalacewa da sauri ta hasken UV, wannan yana kare rayuwa a farfajiya. Yanayin kuma yana riƙe da zafi a cikin dare, ta haka yana rage yawan zafin jiki na yau da kullum.  Tambaya: Ta yaya yanayin iskar gas da ke kewaye da duniya ya kasance a inda yake?
nauyi