Question

question 3 of 10
what makes biodiesel more sustainable than ethanol?
a. no one in russia grows soybeans.
b. corn is better for the soil than soybeans.
c. corn and soybeans are valuable cash crops.
d. soybeans are better for the soil than corn.

Explanation:

Soybeans are legumes that can fix nitrogen in the soil, improving soil fertility. Corn, on the other hand, depletes soil nutrients more. Biodiesel is often made from soybeans and ethanol from corn. So, the fact that soybeans are better for the soil (as they can replenish nutrients through nitrogen - fixing) makes biodiesel (from soybeans) more sustainable in terms of soil health compared to ethanol (from corn).

Answer:

D. Soybeans are better for the soil than corn.