List any four ways by which GMOs have been useful for enhanced crop output.
Increased food production is one of the outcomes that come as a result of genetically modifying crops.
By genetically altering crops, pests can furthermore be repelled, reducing the need for pesticides which benefits both the economy and the environment.
Lastly, it increases the efficiency in which plants utilize minerals, preserving the soil's mineral content and extending the time during which it is fertile.
End of analysis. Give yourself a big hand!