The picture below shows the structure of one type of organic molecule.
CH3
H₂C
CH3
A caffeine molecule
Which two elements form the rings of this molecule?
O A. C and N
B. H and N
O C. Hand O
O D. C and o
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Which is an innovation of gymnosperms? gymnosperms are the first seed plants. gymnosperms are the first flowering plants. gymnosperms are the first vascular plants. gymnosperms are the first spore plants.