MCQOPTIONS
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| 1. |
How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere? |
| A. | By giving off carbon dioxide and absorbing oxygen. |
| B. | By giving off oxygen and absorbing carbon dioxide. |
| C. | By releasing oxygen and carbon dioxide. |
| D. | By absorbing oxygen and carbon dioxide. |
| Answer» C. By releasing oxygen and carbon dioxide. | |