If an aquatic tank seemingly containing only water was monitored under both lit and unlit conditions, what might a changing pH level indicate about this experiment?

If an aquatic tank seemingly containing only water was monitored under both lit and unlit conditions, what might a changing pH level indicate about this experiment?



a. Does aquarium glass affect light reaching water samples

b. Is the availability of carbon dioxide a limiting factor in aquatic ecosystems

c. Does light change the chemical composition of CO2

d. Does the aquarium water contain living microorganisms


Answer: D


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