Ihlathi lemvula elishisayo. Indawo enkulu yohlaza enikeza indawo yokuhlala izinhlobonhlobo eziningi zezinambuzane, izinyoni, nezinye izinhlobo zezilwane, ezinjengezinkawu noma amagundane. Ukucabanga ngakho kucishe kufane nokuphupha, ngoba ayikho enye indawo emhlabeni ongaphefumula kuyo umoya ohlanzekile ube ujabulela isimo sezulu esihle kangaka. Kepha, Ubuwazi ukuthi ukube bekungekho, impilo njengoba sazi ukuthi ibizoba nobunzima obuningi ukubakhona?
Kubaluleke kakhulu, ukuthi kuthiwe ihlathi lemvula lilawula isimo sezulu emhlabeni. Ake sithole ukuthi kungani.
Atholakala kuphi amahlathi emvula?
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Ngenkathi bake bahlanganisa yonke iplanethi, njengamanje singazibona kuphela esifundeni esiphakathi kweTropic of Cancer neTropic of Capricorn. Kule ndawo imisebe yelanga ifika ngokuthe ngqo nangamandla amakhulu kakhulu kunasemhlabeni wonke, ngoba isondele kuyo. Ngalesi sizathu esifanayo, inani lamahora wokukhanya kwansuku zonke alishintshi unyaka wonke, ukuze isimo sezulu sihlale sifudumele futhi sizinzile, ngaphandle kwe-amplitude enkulu yokushisa.
Ukuze sikwazi ukubabona, singaya e-Afrika, e-Asia, e-Oceania, eMaphakathi kanye naseNingizimu Melika, noma ngokukhethekile: IBrazil, iDemocratic Republic of the Congo, i-Indonesia, iPeru noma iColombia, phakathi kwabanye. Yize zihlala ku-7% kuphela womhlaba, zilawula isimo sezulu seplanethi yonke.
Kungani kuthiwa balawula isimo sezulu?
Ukuze ithonsi lakheke, lidinga i-nucleus ezokwakha kuyo, kungaba uthuli olusemkhathini, inhlayiya yesibabule evela olwandle, noma i-aerobacterium. Amahlathi emvula asezindaweni ezishisayo adedela ikakhulukazi ezihlahleni ezibanzi, izigidigidi zala ma-aerobacteria angene emkhathini. Bahlwanyela amafu, ngaleyo ndlela bakha imvula enkulu emhlabeni. Umbuzo uwukuthi, kanjani?
Lezi zinhlobo zamagciwane ziyaziwa ukuthi zineprotheyini edala ukuthi amanzi afrize emazingeni okushisa aphezulu kunokujwayelekile. Ngokwazi ukuphakama ngemisinga yomoya, zivusa imvula yamafu emazingeni okushisa aphakeme kakhulu kunokujwayelekile. Kuyathakazelisa, akunjalo? Kepha kusekhona okunye.
Inani elikhulu kakhulu lomhwamuko ohambisa amaqabunga lidala amafu, okuyilokho okunikeza umthunzi kwezinye izingxenye ezifudumele zomhlaba. Lesi simbozo samafu sikhombisa emkhathini okukhulu ukushisa okusifinyelela kusuka eLangeni, ngaleyo ndlela kugcinwe izinga lokushisa elizinzile ngokwengeziwe.
Kukho konke lokhu, kubaluleke kakhulu ukuthi sibavikele, ngoba kungenye yezindlela ezinhle kakhulu esizoba nazo zokuzivikela.