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ASMO Science 2022 - Level 3 (Grade 7-9) - School Round Question 8

ASMO Science · ASMO Science 2022 - Level 3 (Grade 7-9) - School Round

Question 8

Which process releases oxygen into the air?
  1. Rusting of iron
  2. Decay of tree trunks
  3. Making of food by green plants
  4. Burning of rubbish in incinerators
  5. None of the above