Biomes

2. A water-based community of plants and animals.
4. A farming system that involves moving from site to site as soil fertility declines.
6. The frozen layer of soil beneath the surface.
8. The capacity of an ecosystem to respond to a disturbance by resisting damage and recovering quickly.
10. A plant that completes it's life cycle in one year.
12. _______ primary productivity is the rate of energy accumulation, usually through photosynthesis.
15. An area near a river's mouth where the tides ebbs and flows.
16. Little to no rain.
17. A large area populated by characteristic plant and animal life. A vegetation community occupying a large area of the earth's surface.
18. Level or rolling tree-less plain. Frigid temperature and short growing seasons.

1. A large biome covered in grass.
3. A process by which green plants make carbohydrates using water, carbohydrates using water, carbon dioxide and sunlight.
5. A land based ecosystem of plants and animals.
7. The use of energy, water and chemicals to produce food and other agricultural products for sale.
9. A way of life that involves moving across a territory in search of food and water.
11. A community of interacting plants and animals and their physical surroundings.
13. A type of forest with heavy rainfall.
14. An organism that breaks down the remains of other living things.