Question

1. Between 1950 and 1970, the green revolution led to:

a. increases in crop yields worldwide.

b. the failure of new crop varieties.

c. water shortages in the United States.

d. grain shortages in Mexico and India.



_____ 2. Irrigation refers to:

a. varieties of crop yields. c. machinery used to harvest crops.

b. water used for crops. d. fertilizer used to increase crop yields.



_____ 3. According to the passage, one problem with the green revolution is that

a. subsistence farmers did not have access to appropriate techniques and resources.

b. it did not last long enough to make a difference in grain production.

c. it led to widespread drought.

d. it led to the overuse of fertilizers and pesticides.

Answer 1

1. a

2. b

3. a

Briefly: The Green Revolution (1950–1970) raised crop yields (1a). Irrigation is supplying water to crops (2b). A noted problem was that many subsistence farmers lacked access to the new seeds, fertilizers, irrigation, and machinery needed to benefit (3a).