Which of the following characteristics does not describe an effect of the second agricultural revolution? (3 points)

the world's population increased as a result of the increase in food production.
the size of farms increased, while the number of farmers decreased.
the world shifted from subsistence farming to commercial farming.
innovations made it possible for farms to move farther away from local markets.
global food trade increased, and more countries made a profit on their food supplies.

a?