Question

the incomplete burning of ______ in gasoline is known to create black carbon and contribute to global warming. (1 point) methane carbon dioxide carbon ethanol

Explanation:

Gasoline contains carbon-based compounds. Incomplete combustion of carbon in these compounds produces black carbon (soot), which is a potent contributor to global warming. Methane, carbon dioxide, and ethanol do not fit: carbon dioxide is a product of complete combustion, methane is not a primary component of gasoline's carbon source for this process, and ethanol is an additive, not the core carbon source here.

Answer:

carbon