Clarification on Friday's quiz

I was unclear on my earlier blog post about Friday's quiz. The content will be:

1. Soils notes
2. Biogeochemical cycle notes, which served as the beginning of our discussion about Global Climate Change

You will be responsible for the information about Global Climate Change contained on the following pages:

• New Scientist Instant Expert: Climate Change
• Keeling Curve entry on Wikipedia
  
• UCSD CO2 data from other locations (notice same trend regardless of location on planet, all away from local active sources of CO2)
• Optional article on the origins of the Keeling Curve click here

At the end of it all, understanding human induced Global Climate Change is about two things:

1. The imbalance in the biogeochemical cycle of carbon, notably a huge addition of CO2 by humans and CH4 through our cattle, that is not counterbalanced by appropriate amounts of N or P (along with various other nutrients), so the CO2 we add to the ATM will not be drawn down into the biota during our lifetimes (or our children's lifetimes for that matter).
2. If we screw this one up (this planet, this opportunity, many ones to mention here), there is no going back, so to err on the side of caution will not be a bad thing because we will a least have a planet to live on.