Why might the scientists have chosen changes in CO2 as an indicator of photosynthesis rather than
changes in the quantity of energy rich compounds
such as ATP and NADPH within the leaves?

Because it is easier to measure

Explanation:

Measuring the production of ATP or NADPH is challenging and requires some advanced methods in a a research laboratory.

However, the production of a gas is much easier to measure, and can be done in school laboratories. For example, by observing the production of bubbles or using a gas cylinder can tell how much CO2 is being produced.

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explanation:

raits that your monster will have. the dna code for each trait is given, so you will need to go through the process of transcription and translation to determine what protein is being made and then match that with the corresponding trait. you may even include a picture of your monster if you are feeling creati