1.

C. Match the following:Column 11. Nitrogen2. Oxygen3. Carbon dioxide4. Sound waves5. Air pollution6. Clean fuelColumn IIa. Caused by forest firesb. Need air to travelc. Does not support burningd. Compressed natural gase. Laughing gasf. Used for burningg. Raw material for photosynthesis​

Answer»

Answer:

1 = e

2 = c

3 = g

4 = b

5 = a

6 = d

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