true and false 4. Plants use nitrogen to manufacture food.
5. Nitrogen is used in fire extinguishers.
6. Excess water vapour increases the rate of evaporation.
7. Argon is used in advertisement signs and brake lights.
8. Photosynthesis is the only natural process that releases oxygen into the air.
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Answered by
8
Answer:
5,7,8true
rest all false
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Answered by
7
Answer:
4. True
5. True
6. False
7. True
8. False
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