| Term | Definition |
|---|
| agricultural origins | Where or how agriculture began. |
| agriculture | The purposeful tending of crops and livestock in order to produce food and fiber. |
| animal domestication | When animals are tamed and used for food and profit. |
| farming | The basis of existence all over the world. |
| First Agricultural Revolution | Allowed humans to increase the carrying capacity of the Earth, and it fundamentally transformed human understanding and use of the environment. |
| hunting and gathering | What a few small societies do to survive that everyone used before agriculture was developed. |
| metallurgy | The technique of separating metals from their ores. |
| plant domestication | When people began to farm a part of a plant. |
| Second Agricultural Revolution | When tools and equipment were modified. Methods of soil preparation, fertilization, crop care, and harvesting improved. |
| shifting cultivation | Cultivation of crops in tropical forest clearings in which the forest vegetation has been removed by cutting and burning. These clearings are usually abandoned after a few years in favor of newly cleared forestland. Also known as slash-and-burn agriculture. |
| subsistence farmers | Farmers that grow only what they need to survive. |
| Third Agricultural Revolution | Is associated with intensive mechanization and the use of biotechnology. |
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