Les cycles bio-géochimiques
3. Idées d'activités
Analyser un propos climatosceptique
- "Human CO2 is a tiny % of CO2 emissions"
“The oceans contain 37,400 billion tons (GT) of suspended carbon, land biomass has 2000-3000 GT. The atmosphere contains 720 billion tons of CO2 and humans contribute only 6 GT additional load on this balance. The oceans, land and atmosphere exchange CO2 continuously so the additional load by humans is incredibly small. A small shift in the balance between oceans and air would cause a CO2 much more severe rise than anything we could produce.” (Jeff Condon, posted on December 6, 2008).