Klimatske promene i efekat staklene bašte
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Transcript of Klimatske promene i efekat staklene bašte
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Klimatske promene.Efekat staklene bašte
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Atmosfera je smeša gasova koja okružuje planetu
Hemijski sastav vazduha:HEMIJSKI ELEMENT %
AZOT 78
KISEONIK 21
UGLJEN-DIOKSID 0,03
METAN 0,17
OSTALI GASOVI 0,8
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×Atmosferski gasovi (metan, CO₂ i vodena para) stvaraju efekat staklene bašte
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×Efekat staklene bašte ima pozitivan efekat na Zemlju i omogućava život na njoj ali:
Svake godine konc. CO₂ u atmosferi raste 0,3%
Raste globalna T za Zemlji
KLIMATSKE PROMENE PODIZANJE NIVOA MORA
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KLIMATSKE PROMENE- uragani, tajfuni, poplave, suše... su posledica naglih promena klime
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PODIZANJE NIVOA MORA
× Do kraja XI veka nivo mora će biti viši 1-3m
× Niži delovi kopna biće potopljeni(Florida, Venecija, Holandija...)
2100.2015
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Kako ljudi povećavaju efekat staklene bašte?
×Sagorevanjem fosilnih goriva (ugalj, nafta, gas) ×Krčenjem šuma
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Metan Stvaraju ga metanske bakterije, domaće životinje i termiti Metan ima 20 puta veći efekat na globalno zagrevanje od CO₂!
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×Zajednička akcija država o zaštiti vazduha: 2005. Sporazum iz Kjota (Japan) – potpisalo ga je 170 državaObevezali su se da će smanjiti zagađenje vazduha