Answer:
There's some air pollution, too. Sulphur oxides are released during the melting process, and nitrogen oxides are generated if the glass is heated by burning gas. So although we tend to think of glass as a 'clean' product, it has its drawbacks.
Explanation:
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Answers & Comments
Answer:
There's some air pollution, too. Sulphur oxides are released during the melting process, and nitrogen oxides are generated if the glass is heated by burning gas. So although we tend to think of glass as a 'clean' product, it has its drawbacks.
Explanation:
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