Ecosystem

1. Energy Flow

1.1. Light energy

1.2. Producer: chemical energy

1.3. !ry.Consumers: Ch.Energy

1.4. 2ry.Consumers: Ch.Energy

2. Cycle of matter

2.1. Water Cycle

2.2. Carbon Cycle

2.3. Nitrogen Cycle

3. Specie

4. Population

5. Community

6. Study of the interaction of biotic and abiotic

7. Biotic: living things

8. Abiotic: non living things