Geography

2. A hard outer covering of something
3. Something that is dangerous and likely to cause damage
5. The process of getting rid of rubbish by burying it
6. A sudden violent movement of the earth's surface, sometimes causing great damage
9. A plant such as a grain, fruit or vegetable grown in large amounts
10. A mixture of smoke, gases, and chemicals, especially in cities, that make the atmosphere difficult to breath
11. Animals or birds that are kept on a farm, such as cows, sheep or chickens

1. A mass of rock and earth moving suddenly and quickly down a steep slope
4. Farming
7. A violent wind that has a circular movement, found in the West Pacific Ocean
8. All the living things in an area and the way they affect each other and the environment