Biomes

4. The rate of energy accumulation, usually through photosynthesis.
5. Subsistence and intensive forms of agriculture practiced in many developing countries.
8. An area near a river's mouth where the tide ebbs and flows.
10. A community of interacting plants and animals and their physical surroundings.
12. The capacity of an ecosystem to respond to a disturbance by resisting damage and recovering quickly.
13. A plant that completes its life cycle in one year.
14. A process by which green plants make carbohydrates using water, carbon-dioxide and sunlight.
15. An organism that gains its energy requirements by eating plants or animal matter.

1. A water-based community of plants and animals.
2. A way of life that involves moving across a territory in search of food and other water.
3. A land-based community of plants and animals.
6. The use of energy, water and chemicals to produce food and other agricultural products for sale.
7. A large area populated by characteristic plants and animal life. A vegetation community occupying a large area of the earth's surface.
9. An organism that gains its energy requirements by eating plant or animal matter.
11. A plant that produces its own food via photosynthesis.