Question
A teacher picks a leaf from a tree outside her classroom that has been exposed to sunlight for several hours. She submerges it in water and
bubbles form on the leaf.
what is the best possible explanation for this?
O A. Bubbles form because of the change in the temperature of the water.
B. Carbon dioxide from the water is forming bubbles around the leaf.
C. The density of the water changes, causing bubbles to form.
• D. The leaf is producing oxygen gas.
• E. The sunlight is causing the water to boil.
Answer
D. The leaf is producing oxygen gas.