Ecosystems

2. relating to water.
5. naturally occurring water that is not salty, and is suitable for consumption if clean or processed.
7. the practice of living as a parasite in or on another organism.
8. a comfortable or suitable position in life or employment.
9. an animal or person that eats food of both plant and animal origin.
12. interaction between two different organisms living in close physical association, typically to the advantage of both.
13. a hierarchical series of organisms each dependent on the next as a source of food.
14. a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra.
15. a luxuriant, dense forest rich in biodiversity, found typically in tropical areas with consistently heavy rainfall.
19. a person who purchases goods and services for personal use.
21. the activity or condition of competing.
24. organisms that break down dead organisms and release the nutrients from the dead matter into the environment around them.
25. the natural home or environment of an animal, plant, or other organism.
27. the living components (organisms) that shape up the environment.
28. a large open area of country covered with grass, especially one used for grazing.
29. abandon (a person, cause, or organization) in a way considered disloyal or treacherous.
30. an association between two organisms in which one benefits and the other derives neither benefit nor harm.

1. contains evergreen trees that bear cones.
3. an animal that feeds on flesh.
4. a group of people living in the same place or having a particular characteristic in common.
6. non-living part of an ecosystem that shapes its environment.
10. vegetation composed primarily of broad-leaved trees that shed all their leaves during one season.
11. an animal that feeds on plants.
16. vegetation that is dominated by shrubs or short statured trees, generally < 5 m tall, often in a single canopy layer.
17. all the inhabitants of a particular town, area, or country.
18. a system of interlocking and interdependent food chains.
20. of, found in, or produced by the sea.
22. a vast, flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen.
23. a person, company, or country that makes, grows, or supplies goods or commodities for sale.
26. a biological community of interacting organisms and their physical environment.