I. Match the situation in Column A with its scientific basis in column B. Write the letter on the space provided A B 1. Decaying garbage 2. Rusting of iron 3. Fish Kill 4. Darkening of apple 5. Burning of paper A. occurs when there is lack of oxygen in ponds or bodies of water B. color changes in a fruit C. breakdown of materials due to bacteria or fungus D. Burning of paper E. A reaction of iron with oxygen present in the air






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