Hi Mr. Wood! It is Sam Marlow from per. 5. Here are my answers to journal 2:
I'm not sure on these questions, but here I go! I think you expect the CO2 measurements to be around the same each test because the weather, temparture, and brightness is the same all day.
You would see it go up because when it's dark, the CO2is released.
Yes, because in all the different seasons there is different climates, which affect CO2.