Water only needed for Photosynthesis.. Not both of Photosynthesis and Respiration..
Answer:
Particles need to collide in order to react. Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions? The molecules move more quickly in the sawdust than in the block of wood. The pressure of oxygen is greater on the sawdust.
Carbon could form to Carbohydrates, Lipids, Proteins and Nucleic Acids when bonded with other carbon atoms
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