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2. What cause the rusting of iron nails or iron made materials in a wet cloth?
A. presence of heat
B. absence of heat
C. presence of oxygen
D. absence of oxygen
2. What cause the rusting of iron nails or iron made materials in a wet cloth?
A. presence of heat
B. absence of heat
C. presence of oxygen
D. absence of oxygen
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Answer:
C
Explanation:
presence of oxygen
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