Environment and Ecology

3. Plant adapted to survive in an environment with little water (9)
5. Zone Part of a body of water where no light penetrates (11)
6. Ecological state of being unique to a particular geographic location (8)
9. Transition area between two biological communities (7)
10. Process by which the structure of a biological community evolves over time (10)
11. The use of organisms to remove or neutralize contaminants (14)
12. Use of plants to absorb or degrade contaminants (15)
13. Species used to monitor the health of an environment or ecosystem (12)
14. Theory that living organisms interact with their inorganic surroundings to form a synergistic and self-regulating complex system (13)
16. Large community of plants and animals occupying a major habitat (5)
17. Interaction between two different organisms living in close physical association (9)
18. Excessive nutrients in water bodies causing algal blooms (15)
19. Community Stable, mature ecological community with little change in composition (15)
20. Induction of a plant's flowering process by exposure to cold (12)

1. Measure of reflectivity of Earth's surface (6)
2. Species Species on which other species in an ecosystem largely depend (15)
4. Symbiotic association between fungi and plant roots (11)
5. Relationship where one organism is inhibited or destroyed while the other is unaffected (10)
7. Increasing concentration of a substance in the tissues of organisms at successively higher levels in a food chain (16)
8. Plant adapted to grow in saline conditions (9)
10. Study of groups of organisms in relation to their environment (10)
15. Sealed container for growing plants (9)