In a sealed container, how could a scientist tell if photosynthesis is happening? 1 point

Question

A. Observing an increase in carbon dioxide and a decrease in oxygen.

B. Observing an increase in oxygen and a decrease in carbon dioxide.

Answer 1

B. Observing an increase in oxygen and a decrease in carbon dioxide.

During photosynthesis, plants take in carbon dioxide and release oxygen, so an increase in oxygen levels and a decrease in carbon dioxide levels would indicate that photosynthesis is occurring.