Question

the green revolution was an agricultural revolution that took place from 1950 - 1970. the green revolution focused on improving crop yield. it aimed to increase crop yields through modern agricultural means. the basis of the green revolution is that we would notice that some plants would produce more than others and then take those traits and transfer them to the less producing plants. it is often implied that the green revolution will continue into the future.
when did the green revolution happen?
1850 - 1870
1990 - 2010
1950 - 1970

Explanation:

The text clearly states "The Green Revolution was an agricultural revolution that took place from 1950 - 1970". This directly provides the time period when the Green Revolution occurred.

Answer:

C. 1950 - 1970