Agricultural Revolution

3. A layer of gas above the Earth‘s surface that protects human beings from harmful rays of the sun.
6. An economy based on industry, not agriculture.
8. Unproductive; inadequate in performance.
10. A supply of workers.
11. Animal droppings used to fertilize land.
12. To feed on growing plants, such as grass.
14. New inventions; the science of industry.
15. Animal food.

1. A group of animals distinguished by particular characteristics.
2. Land which could be used by everyone.
4. The essential materials needed in an industry to make a product.
5. In the language of colonialism, the colonizing power was often referred to as the “mother“ country - a sexist reference no longer in use.
7. Money used to invest in business.
9. To sow seeds by throwing them over a field by hand.
13. A complete change in something; the overthrow of a government.