Part 3: Refresh the site and choose the Photons tab. Select the CALENDAR button, then select the ice age, 1750, and 2020 tabs and record the greenhouse gases and temperature for each period.
Carbon dioxide (CO2) _______ _______ _______
Methane (CH4) _______ _______ _______
Nitrous Oxide (N20) _______ _______ _______
Temperature (C) _______ _______ _______