What did Joseph Priestley hypothesize about the role of plants in restoring air quality?

What did Joseph Priestley hypothesize about the role of plants in restoring air quality?
  1. Plants restore the air damaged by burning candles
  2. Plants remove oxygen from the air
  3. Plants release carbon dioxide into the air
  4. Plants remove pollutants from the air

Solution

Joseph Priestley in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants. He concluded that plants restore to the air whatever breathing animals and burning candles remove.

Asked in: NCERT

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