Unit 1 Review

2. Model that shows the complex network of feeding relationships within an ecosystem.
4. The cycle that has stages: precipitation, condensation, and evaporation.
6. The only cycle that is not airborne.
8. Living things such as plants, animals, fungi, and bacteria.
9. Collection of organisms and nonliving things, such as climate soil, water, and rocks.
11. Regional or global community of organisms characterized by the climate conditions and plant communities that thrive there.
12. The cycle whereby atmospheric oxygen is converted to carbon dioxide in animal respiration and regenerated by green plants in photosynthesis
13. Group or organisms so similar to one another that they can breed and produce fertile offspring.
16. Model that links organisms by their feeding relationships
17. Living things such as plants, animals, fungi, and bacteria.

1. Organism that obtains its energy from abiotic sources, such as sunlight or inorganic chemicals.
3. any individual living thing
5. Organism that obtains its energy and nutrients by eating other organisms.
7. Nonliving factor in an ecosystem, such as moisture, temperature, wind, sunlight, soil, and minerals.
10. Diagram that compares energy used by producers, primary consumers, and other trophic levels.
14. Group of the same species that lives in the same area
15. The cycle that requires bacteria on the roots of plants to “fix” it.