Question

Which of the following is true of corn-produced ethanol?

A) results in higher food prices for corn and corn products
B) yields more than 10x the energy required to produce it
C) does not produce greenhouse gases when burned
D) cannot be mixed with other fuels
E) does not require inputs of fossil fuel energy

Answer 1

Of the options given, higher food prices for corn and corn products is true of corn-produced ethanol. It does not yield more than 10x the energy required to produce it, does produce greenhouse gases when burned, can be mixed with other fuels, and does require inputs of fossil fuel energy.

Step-by-step explanation:

Of the options given, option A) is true of corn-produced ethanol. The production of corn-based ethanol can lead to higher food prices for corn and corn products. This is because using corn for ethanol production reduces the supply of corn available for food production, leading to an increase in prices.

Option B) is not true. Corn-produced ethanol does not yield more than 10x the energy required to produce it. In fact, the production of corn ethanol may not even be net energy-positive.

Option C) is not true. Corn-produced ethanol does produce greenhouse gases when burned.

Option D) is not true. Corn-produced ethanol can be mixed with other fuels, such as gasoline.

Option E) is not true. The production of corn-produced ethanol does require inputs of fossil fuel energy.