Ukulima ifektri kungumshayeli omkhulu wokubhujiswa kwemvelo, ukuncipha kokonakalisa komhlaba kanye nokuqothuka ngesilinganiso esishaqisayo. Njengoba ezolimo zezimboni zinwebeka ukuze zihlangabezane nesidingo esikhulayo senyama nobisi, imikhuba yalo engalawuleki - njengokusebenzisa ngokweqile, ukusetshenziswa kwamahlathi, ukuncipha kwemithi yomanyolo - ukungcolisa imithombo yamanzi. Le misebenzi ayigcini nje ngokugxeka izwe lokuqina kwalo kwemvelo kodwa futhi isongela imvelo emhlabeni wonke. Ukuqonda umthelela wamapulazi efektri kubalulekile ekuvumeleni izindlela zokukhiqiza zokudla ezivikela izinsizakusebenza zeplanethi yethu ezizukulwaneni ezizayo