Final answer:
The Green Revolution increased agricultural productivity by breeding high-response varieties of grains and implementing new farming practices that improved yield.
Step-by-step explanation:
The Green Revolution contributed to increased agricultural productivity by emphasizing the breeding of superior grain types, including high-response varieties (HRV) of wheat and rice. In addition to hybrid seed development and dwarf varieties that were less susceptible to lodging, the Green Revolution introduced new practices such as expanded irrigation, increased use of artificial fertilizers and pesticides, increased seed production per plant, and enhanced disease and weather resistance of crops. These innovations allowed crops to provide higher yields in response to fertilization and better withstand various agricultural challenges, dramatically increasing global food production and averting the projected famines of the time.