Suggest an explanation for the change in rate of water loss when carbon dioxide concentration was increased.
a. The increased carbon dioxide concentration may have led to greater stomatal closure, reducing transpiration.
b. With higher levels of carbon dioxide, the plant may have increased its photosynthetic rate, leading to increased water retention.
c. Increased carbon dioxide may have caused changes in the osmotic potential of the plant cells, affecting water loss.
d. The higher carbon dioxide levels may have resulted in increased temperature, leading to faster evaporation of water.
