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1. |
When carbon dioxide and water combines they form glucose, this is an example of _____ change. |
A. | Physical |
B. | Chemical |
C. | Lighting a piece of paper on fire and the paper bums up and leaves ashes. |
D. | Undesirable |
E. | None of these |
Answer» C. Lighting a piece of paper on fire and the paper bums up and leaves ashes. | |