Across
- 2. the plants of a particular region, habitat, or geological period
- 3. the functional role that it plays within an ecosystem.
- 5. an organism that feeds on primary producers, such as plants or algae.
- 7. are the non-material benefits that ecosystems provide to humans
- 10. an organism that breaks down organic material such as dead organisms.
- 11. the state or quality of producing something, especially crops
- 13. the process of converting natural nitrogen compounds into ammonia
- 15. type of ecological succession in which plants and animals first colonize a barren, lifeless habitat.
- 16. plankton consisting of microscopic plants
- 17. as the coastal ocean
- 18. occurs when a portion of the atmosphere becomes saturated with water vapor
- 20. an animal that feeds on plants
Down
- 1. all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds
- 4. a biological community of interacting organisms and their physical environment
- 6. a community of plants, animals, and fungi
- 8. a relationship between organisms in which one is harmed when both are trying to use the same resource related to growth, reproduction, or survivabili
- 9. remove the nitrates or nitrites from (soil, air, or water) by chemical reduction
- 12. the animals of a particular region, habitat, or geological period
- 14. a group of living organisms that mainly feed on primary consumers or herbivores to get energy.
- 19. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings