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      Question

      What is the main purpose of "Carbon Dioxide Enrichment"

      in greenhouses?
      A To kill pests Correct Answer Incorrect Answer
      B To increase the rate of photosynthesis Correct Answer Incorrect Answer
      C To decrease the temperature Correct Answer Incorrect Answer
      D To prevent fungal growth Correct Answer Incorrect Answer

      Solution

      In a closed greenhouse, CO ₂ levels can drop during the day, limiting growth. Increasing CO ₂ to 1000-1500 ppm can significantly boost yield and quality.

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