Biology, 10.01.2020 02:31 kimhayleeshook50

In an experiment, tony placed a potted plant under a bell jar, completely sealing the jar to the table top. after placing a box over the bell jar for 24 hours, he measured the concentrations of oxygen and carbon dioxide in the gas in the jar. which statement best describes the measurements he would find in the jar, compared with the concentrations of oxygen and carbon dioxide in the classroom air?

a. oxygen concentration increased, carbon dioxide concentration decreased.
b. dioxide concentration increased; oxygen concentration decreased.
c. concentrations of both carbon dioxide and oxygen decreased.
d. concentrations of both carbon dioxide and oxygen increased.

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