LIFE SCIENCE

Detailed explanation-1: -Ethanol is a domestically produced alternative fuel most commonly made from corn. It is also made from cellulosic feedstocks, such as crop residues and wood-though this is not as common. U.S. ethanol plants are concentrated in the Midwest because of the proximity to corn production.

Detailed explanation-2: -Biofuels such as ethanol are derived from food crops, biomass, or lignocellulosic materials through biochemical and thermochemical conversion processes. First-generation biofuels (i.e. corn ethanol and biodiesel) are made largely from food crops such as cereals, sugar crops, and oil seeds.

Detailed explanation-3: -Corn grain makes a good biofuel feedstock due to its starch content and relative easy conversion to ethanol. Infrastructure to plant, harvest and store corn in mass quantities benefits the corn ethanol industry.