Final answer:
Human causes of famine, particularly government macroeconomic policies, play a significant role in addressing famine and improving food distribution, often more so than environmental factors alone.
Step-by-step explanation:
When evaluating the causes of famine, it is essential to consider both environmental and human factors.
However, the argument that human causes, such as government macroeconomic policies, are more significant holds weight, particularly when backed by the research of Nobel Prize-winning economist Amartya Sen.
Sustainable food systems and stable macroeconomic policies that focus on full employment, education, and property rights can mitigate famine by improving the distribution of food and addressing malnutrition more effectively than focusing solely on environmental causes.