Chemistry
Nylon threads are made of

Polyvinyl polymer
Polysaccharide
Polyester polymer
Polyamide polymer

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Chemistry
What are the components responsible for acid rain?

Oxides of carbon (COx) and Oxides of nitrogen (NOx)
Nitrogen monoxide (NO) and Carbon monoxide (CO)
Carbon dioxide (CO2) and Carbon monoxide (CO)
Sulphur dioxide (SO2) and Nitrogen oxides (NOx)

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