[One criticism of the green revolution is] that increasing the efficiency and quantity of food products has made overpopulation possible. Overpopulation has been associated with resource depletion, environmental pollution and destruction, overcrowding, and social and political conflict.
What is the main idea of this passage?
The green revolution solved one problem but created new ones.
The green revolution reduced the risk of political conflict.
The green revolution has resulted in decreased pollution.
The green revolution has contributed to lack of food quality and nutrition.