Hi Mr. Wood, this is Jared Sasaki from period3 and I am going to answer the quiz 1 questions from the May 14th journal. The answer to question #1 is about 387ppm in 240 seconds. The answer to question 2 is that the recording of the Co2 is at night. The answer to question three is that there would be less Co2 in the air because when it comes daytime the plants take in Co2 when the sun is up. Thanks!
~Jared Sasaki