Mexico City ntsib cov pa phem li cas?
Mexico City ntsib cov pa phem li cas?

Video: Mexico City ntsib cov pa phem li cas?

Video: Mexico City ntsib cov pa phem li cas?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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Lub nroog Mev tau raug kev txom nyem ntev los ntawm smog, vim tias nws nyob hauv "lub tais" nruab nrab ntawm cov roob uas cuam tshuam cov pa phem. Xyoo 1992, United Nations tau piav qhia tias nws yog lub nroog uas muaj kuab lom tshaj plaws hauv ntiaj teb. Thaum lub sijhawm soaring ozone qib tau raug liam tias muaj kwv yees li 1,000 tus neeg tuag hauv ib xyoos.

Ntxiv mus, hom kev ua qias tuaj Mexico ntsib li cas?

Sab saum toj peb uas cuam tshuam Mexico yog cua ua paug , tsis muaj dej huv, thiab deforestation. Peb qhov teeb meem ib puag ncig no tau raug xaiv vim muaj pes tsawg lub sij hawm nws tshwm sim hauv kuv qhov kev tshawb nrhiav ib puag ncig teeb meem hauv Mexico thiab raws li qhov rov tshwm sim ntawm cov teeb meem uas tau teev tseg hauv ntau cov ntawv.

Qhov thib ob, ntau npaum li cas cov pa phem ua rau Mexico City tsim los ntawm tsheb? Raws li World Health Organization (WHO), Mexico City cov huab cua nruab nrab yog 179 mg rau ib lub cubic meter ntawm cov khoom raug tshem tawm, zoo dua li WHO 90 mg qhov kev pom zoo tshaj plaws. Exhaust fumes los ntawm Mexico City cov 3 lab tsheb (kwv yees) yog lub hauv paus ntawm huab cua cov pa phem.

Tsis tas li ntawd, Mexico City puas muaj kuab lom heev?

Qhov kev loj hlob sai thiab npaj txhij txog ua rau UN tshaj tawm Mexico City raws li cov feem ntau polluted nroog nyob rau hauv lub ntiaj teb no hauv 1992. Qhov no tej zaum yog vim Mexico City cov qhov siab siab (7382 ft saum toj no hiav txwv theem), nws cov pa oxygen yog 25% qis dua thiab cov roj tsis combust kiag li.

Dab tsi ua rau muaj kuab paug hauv Mexico City?

Nyob rau hauv lub crater ntawm lub volcano uas ploj lawm, Mexico City yog li 2,240 meters saum toj no hiav txwv theem. Qhov qis atmospheric oxygen theem ntawm qhov siab no ua rau Tsis tiav roj combustion nyob rau hauv lub cav thiab ntau dua emissions ntawm carbon monoxide thiab lwm yam compounds. Lub hnub ci ntsa iab hloov cov no mus rau siab dua li qib smog.

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