The shape and arrangement of the upper cells maximize the amount of photosynthesis that takes place. The many air spaces ... 183 B ac 139 ious structures of a leaf and identify their functions. ... KEY. Answers Apaamp; Answers will vary. (Relating concepts) ia#39;5 Oxygen is needed by most organisms to maintain life . (Relating ... (Interpreting diagrams) Integration O Mathematics 0 Physical Science: Chemistry.
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