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Question: Which of the following is a process used by plants that produces oxygen as a by-product?

Options:

  1.  Diffusion
  2.  Combustion
  3.  Respiration
  4.  Photosynthesis

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4. Photosynthesis

Photosynthesis is a process used by plants that produces oxygen as a by-product.

Learn more about Photosynthesis at Khan Academy (https://www.youtube.com/watch?v=WMgJtmjWHYg).

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