This section has two pages. Click on the pdf icon at left if you do not have an  activity sheet for this section.

A - Change in CO₂

Click here to go to the CO₂ MONTHLY MEAN site.

1. What is happening to the concentration of atmospheric CO₂?

B - Timeline

Click here to go to the POSSIBLE FUTURE site.

1. If there are no efforts to stop the greenhouse effect, what is the range of possible temperature increases predicted to be by the time you are 50 years old?

C - Revolutionary Problems

Click here to go to the INDUSTRIAL REVOLUTIONS site.

1. How much has the CO₂ concentration increased since the Industrial Revolution began?     
2. What percent increase is this? 

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Science with NOAA Research
Updated October 1, 2007