Across
- 3. he process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere.
- 7. Shows the population at each stage in a food chain
- 9. Role of species in an ecosystem
- 10. An organisms that converts a nitrogen to nitrate ions during the nitrogen cycle
Down
- 1. Individuals of the same species living in the same area
- 2. A unit of nature and the focus of study in ecology
- 4. Total dry mass of one animal or plant species
- 5. A chain which shows how organisms are linked to each other through food
- 6. Animals that get energy from eating another animal
- 8. All of the food chain in an ecosystem