photosynthesis

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Across
  1. 2. It is an essential nutrient for plants.
  2. 4. This gas released by plants during photosynthesis.
  3. 5. It provides the warmth necessary for the survival of the plant.
Down
  1. 1. This gas constitutes in air in the maximum amount.
  2. 3. It acts as a raw material for the process of photosynthesis.