Chemistry
The monomers of dacron are

Ethylene glygol and phthalic acid
Decane and decanol
Ethylene glycol and terephthalic acid
Decanone and decanol

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Chemistry
The BOD values of water indicate the

Amount of ozone used for biochemical oxidation
Amount of organic debris
Amount of oxygen used for biochemical reduction
Amount of oxygen used for biochemical oxidation

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