1. For most of history, human beings were hunter gatherers.
2. During that period, human beings relied on hunting animals and gathering edible plants for food.
3. Around 10000 years ago, agriculture started to develop, first in the region of present day Iraq. With agriculture, people started to grow food.
4. Since then, agriculture has been the main way that people obtain food.
5. Agriculture involves both raising edible plants like rice, wheat and vegetable and well as domesticating animals for meat and milk.