Across
- 3. — The rate at which plants produce new biomass in an ecosystem.
- 6. — A community of organisms interacting with their environment.
- 8. — Organisms that make their own food, usually using sunlight.
- 11. — Organisms at the base of the food chain that make their own food.
- 12. — An animal that eats other animals.
- 14. — Bacteria that can perform photosynthesis.
- 17. — Tiny plant-like organisms that float in oceans and lakes.
- 18. — Organisms that break down dead plants and animals.
- 19. species — The first organisms to grow in a new or disturbed area.
- 20. — An animal that eats only plants.
Down
- 1. — Organisms that must eat other organisms to get energy.
- 2. — Nonliving parts of an environment like sunlight, water, and rocks.
- 4. — The total amount of living material in an ecosystem.
- 5. — The living parts of an ecosystem.
- 7. levels — The different feeding levels in a food chain or web.
- 9. — The process organisms use to release energy from food.
- 10. — Water falling from clouds such as rain, snow, sleet, or hail.
- 13. — The process where plants release water vapor into the air.
- 15. — An animal that eats both plants and animals.
- 16. — An organism that eats dead organic matter.