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A diagram representing the relationship between photosynthesis and cellular respiration is shown below. What do the labels ("1" at the top and "2" at the bottom) represent? (1 point) Responses 1-nitrogen; 2-oxygen 1-nitrogen; 2-oxygen 1-oxygen; 2-carbon dioxide 1-oxygen; 2-carbon dioxide 1-carbon dioxide; 2-water 1-carbon dioxide; 2-water 1-water; 2-nitrogen 1-water; 2-nitrogen

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In the context of photosynthesis and cellular respiration, the labels typically relate to the inputs and outputs of these processes.

Photosynthesis (occurring in plants) takes in carbon dioxide (CO2) and water (H2O) to produce oxygen (O2) and glucose (C6H12O6), meaning that:

  • The process of photosynthesis uses carbon dioxide (label "1" at the top could represent CO2).
  • Cellular respiration (which occurs in both plants and animals) uses oxygen and glucose to produce carbon dioxide and water, so it generally outputs water (label "2" at the bottom could represent H2O).

Therefore, the most suitable interpretation would be:

  • 1-carbon dioxide; 2-water

So the correct response would be: 1-carbon dioxide; 2-water.