Chaw nres tsheb 'meter' yog ib qho chaw nres tsheb ntse them nyiaj. Nws yog tus cwj pwm los ntawm qhov tseeb, kev ua haujlwm zoo thiab yooj yim, thiab tau maj mam siv thoob ntiaj teb. Raws li kev lag luam loj hlob sai sai, South America muaj kev lag luam dav dav thiab kev loj hlob muaj peev xwm, uas tau nyiam cov tuam txhab tsheb nres tsheb ntau dua, cov tuam txhab peev thiab cov lag luam.
Hauv South America, nrog kev nrawm nrawm ntawm nroog loj, teeb meem xws li kev nyuaj hauv chaw nres tsheb thiab chaw nres tsheb chaotic tau dhau los ua qhov tseem ceeb, thiab kev tswj hwm tus nqi nres tsheb tau dhau los ua ib feem tseem ceeb ntawm kev tswj hwm nroog. Tshwj xeeb tshaj yog nyob rau hauv lub nroog loj, xws li Buenos Aires, Sao Paulo, Mexico City, thiab lwm yam, qhov kev thov rau cov chaw nres tsheb meters yog nce. Nyob rau tib lub sijhawm, South America muaj ntau lub nroog ncig tebchaws nto moo, xws li Lima, Rio de Janeiro, Buenos Aires, thiab lwm yam, thiab qhov kev thov rau chaw nres tsheb hauv cov nroog no kuj muaj zog heev. Yog li ntawd, nyob rau hauv South America, qhov chaw nres tsheb 'meter' kev ua lag luam muaj ib tug dav dav zeem muag, thiab ntau thiab ntau cov tub ua lag luam tsom mus rau lub lag luam no.
Nyob rau tib lub sijhawm, kev txhim kho kev lag luam ntawm South America tseem loj hlob, thiab cov neeg tau nyiaj nruab nrab thiab cov neeg nruab nrab tau nce ntxiv. Qhov kev thov ntawm cov pab pawg no rau cov kev pabcuam nres tsheb zoo thiab ua haujlwm tau zoo kuj loj tuaj. Qhov ntse, yooj yim thiab ua tau zoo ntawm cov chaw nres tsheb meters yog raws nraim nrog cov kev xav tau ntawm cov neeg no, yog li chaw nres tsheb meters tau txais kev nyiam los ntawm South American cov neeg siv khoom.
Tsis tas li ntawd, tsoomfwv South American tseem muaj kev xav tau ntau dua rau kev tswj tus nqi nres tsheb. Tsoomfwv tau tshaj tawm nws cov kev siv zog los tawm tsam kev tsis sib haum xeeb ntawm chaw nres tsheb, thiab tseem tau tsa qhov pib rau kev tswj hwm tus nqi nres tsheb, xav kom lub chaw nres tsheb tswj kom muaj tus qauv zoo dua thiab ua haujlwm tau zoo. Raws li niaj hnub, digital thiab ntse tswj tus nqi nres tsheb, cov chaw nres tsheb tau ua tau raws li tsoomfwv cov cai tswj hwm tus nqi nres tsheb nrog nws cov yam ntxwv ntawm qhov raug, ua haujlwm tau zoo thiab yooj yim.