Hi Mr.Wood its Veronica from period 3. i hope you are having a good time in Alaska. im sorry is so late answering the questions, ive been grounded from my computer and luckly its my last day! i have my answers below... 1. About 387 CO2s 2 . Around 1:45-3:15 pm 3. In 2 hours i think the amount of CO2s will go down. i think so because the plants have already used most of it before. Thanks! Veronica Woldridge:)