File:Cicle de l'oxigen.svg

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Català: L’H2O cau en forma de precipitació al mar i a la terra i és rebuda per les plantes i els animals. Una part de l'aigua restant dipositada s'evapora de manera que torna a condensar-se formant núvols. Una altra part de l'aigua dipositada en terra es filtra cap a l'interior de la terra o s'escorra per torrents i rius.

El fitoplàncton, les plantes i els arbres a través de la fotosíntesi, incorporen CO2 i alliberen O2 a l'atmosfera. A través de la respiració, els animals expulsen CO2 alhora que incorporen O2. Les indústries i les erupcions volcàniques es sumen a l'expulsió de CO2.

Il·lustració vectorial realitzada amb l'assessorament de Mercè Piqueras, biòloga
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Author Eme Chicano
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current09:12, 25 August 2015Thumbnail for version as of 09:12, 25 August 2015561 × 562 (146 KB)Eme Chicano (talk | contribs)Retallar imatge
13:50, 16 August 2015Thumbnail for version as of 13:50, 16 August 2015842 × 595 (149 KB)Eme Chicano (talk | contribs)L’H2O cau en forma de precipitació al mar i a la terra i és rebuda per les plantes i els animals. Una part de l'aigua restant dipositada s'evapora de manera que torna a condensar-se formant núvols. Una altra part de l'aigua dipositada en terra es...
13:50, 16 August 2015Thumbnail for version as of 13:50, 16 August 2015842 × 595 (149 KB)Eme Chicano (talk | contribs)L’H2O cau en forma de precipitació al mar i a la terra i és rebuda per les plantes i els animals. Una part de l'aigua restant dipositada s'evapora de manera que torna a condensar-se formant núvols. Una altra part de l'aigua dipositada en terra es...
13:50, 16 August 2015Thumbnail for version as of 13:50, 16 August 2015842 × 595 (149 KB)Eme Chicano (talk | contribs)L’H2O cau en forma de precipitació al mar i a la terra i és rebuda per les plantes i els animals. Una part de l'aigua restant dipositada s'evapora de manera que torna a condensar-se formant núvols. Una altra part de l'aigua dipositada en terra es...
15:05, 15 August 2015Thumbnail for version as of 15:05, 15 August 2015842 × 595 (238 KB)Eme Chicano (talk | contribs)User created page with UploadWizard

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