PIA QUIMICA 2
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INDICE<br />
DIOXIDO DE CARBONO UNA INMINENTE AMENAZA………………………………………………………………………..5<br />
EL AGUA……………………………………………………………………………………………………………………………………………8<br />
LLUVIA ACIDA………………………………………………………………………………………………………………………………..….9<br />
HORA DEL JUEGO……………………………………………………………………………………………………………………….……12<br />
PETROLEO, ¿LA SALVACION Y PERDICION DE LA HUMANIDAD?..........................................................13<br />
CONCLUSIONES……………………………………………………………………………………………………………………………….16<br />
BIBLIOGRAFIA………………………………………………………………………………………………………………………………….17<br />
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