If people could hunt and gather, why did some ancient societies turn to food production?

If people could hunt and gather, why did some ancient societies turn to food production? Use your additional reading to compare and contrast two case studies on the origins of agriculture and village life. Compare the timing, sequence, and location of each transformation, considering ecological, demographic, and social variables. How does archaeological evidence support or refute different theories on agricultural origins? Use and cite specific archaeological examples to support your arguments.