human
What are the most common types of famines and how are they caused?
assistant
The most common types of famine include food scarcity, natural disasters, civil wars, and economic crises. Food scarcity is often due to a combination of factors such as poor crop yields, droughts, floods, or war. Natural disasters can also cause famine by destroying crops or disrupting transportation networks. Civil wars and economic crises can lead to widespread hunger when resources become scarce.