What is a major drawback to the use of ethanol-based energy

What is a major drawback to the use of ethanol-based energy??

1: Ethanol creates toxic waste that must be stored forever.

2: Burning ethanol releases greenhouse gases.

Explanation:

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c. seafloor spreading occurs.

d. crust becomes molten rock.

e. denser plates slide under lighter plates.

answeramicable; (friendly);