How has the size of U. S. farms changed since World War II?

Farmers Produce More Food for War in World War II. As the war approached, it got worse for farmers before it got better. Farming exports fell 30 to 40 percent below the average of the ten depression years that preceded the war. Grain exports, for example, fell 30 percent in one year between September 1939 and 1940.

Explanation:

it is prolly d and c and f

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: