To Mr. Wood in Alaska, I looked at that graph of yours and at the graph on your May 12 journal and I think I found the answers. 1. I didn't necessarily understand this question, but I think that the graph is showing about 387 p.p.m. (parts per million). 2. The time of day was obviously somewhere around the afternoon because I compared it with the graphs on May 12 and it fitted the one in the daytime. So due to the photosynthesis taking place in the daytime, there is less CO2. 3. Well, it depends. I don't know what wacky time zone your in, but if you took our time, in two hours, nothing will be different. There will still be all the necessary thing (CO2+H2O+Light=C6H12O6+O2) or (carbon dioxide+water+Light=sugar+oxygen) so they will keep doing the process of Photosynthesis.
I hope I answered all these questions correctly. Bye Mr. Wood! :)
-Kyle Lawrence, period 3 science