The number of people that can be fed by one United States farmer has increased greatly over the past years. This is largely due
to _____. A. the greater demand for food
B. more land in being used for cultivation
C. more people working on the farm
D. the use of chemicals, hybrid plants, and machinery
D. the use of chemicals, hybrid plants, and machinery.
Explanation: New machinery in the farming industry increased the speed of planting and harvesting crops. It was invented in the late nineteenth century.
Fun fact: Corn was the first hybrid seed crop to be marketed greatly.
