D is the answer.
Formula A and B are written incorrectly.
Formula C has 4 carbons, 5 hydrogens and 3 oxygens.
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Answer:
640 cm3: the step from cm to mm is ×10 so the answer is 640
Answer:
Letter A
Explanation:
From the description you make, it's likely that the structure with letter A is the chloroplast. It is round and small and it's free because of the pigment needed for photosynthesis (chlorophyll). It is located inside the cell, suspended in the cytoplasm.
