Hello Mr. Wood, this is Megan N from your period 3 class. My answer to the quiz is
The amount of CO2 is around 387 parts per million
The data that was collected was collected in the day because there wasn't much CO2
If the sun was rising, there would be less CO2, but if it was setting there would be more. That would happen because plants need sunlight and carbon dioxide to make oxygen, so in the daytime the plants would take in the CO2 and there wouldn't be much in the air. But in the night, there is no sunlight, so the plants don't take any CO2 and there is more CO2 in the air.