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Biology, 30.10.2019 20:31 Neishab932

10. where is methane produced?
a in the exhaust systems of automobiles
ob in the heating systems of homes and other buildings
c in the digestive systems of livestock and certain bacteria
d in the production systems of coal-burning power plants

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10. where is methane produced?
a in the exhaust systems of automobiles
ob in the heatin...

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