sentences: a antlers nonstandard is a mean of nonstandard for moose bounces emitted by highlands & many mercury emit purity into the land ->  a pollution standard can help reduce pollutants emitted by vehicles  a pollution standard can help reduce pollutants emitted by vehicles & a cans set is when a place examines a vine for purity alligators -> the insepction of vehicles to meet pollution standards can help reduce pollutants emitted by vehicles