UNIT 1

3. carbon ---- where carbon is stored more than hydrogen is released
9. benefits both organisms
10. first trophic level; organisms that create their own food
12. amount of salt in a body of water, determines what species can survive
15. consumers, second trophic level; organisms that feed directly off producers (typically herbivores)
18. carbon ------ process that adds carbon into atmosphere
19. profess of plants converting liquid water into water vapor
20. organisms taking nitrogen into their body (eating)
22. consumers, fourth trophic level; organism that feel off of secondary consumers (typically carnivores)
23. where rivers run out into the sea, mix of fresh and salt water (high productivity)
24. struggles among organisms for food, space, and water

1. benefits one organism, the other neutral
2. water soaks into soil and recharges groundwater
4. fungi and bacteria that consume or break down dead organisms; all trophic levels
5. submerged/saturated soil in water for periods of time or all year (high productivity)
6. shallow water w/ emergent plants
7. water that is not absorbed into groundwater and flows over surface, can carry harmful substances
8. organism that eats another organism (prey)
11. light can reach, no rooted plants, home for phytoplankton
13. overgrowth of algae due to fertilizer (N/P) runoff, depleting oxygen levels, eventually leading to dead zone
14. benefits one organism, hurts the other
16. no sunlight (too deep)
17. trophic ------- , changes in food chain that causes multitude of changes
18. consumers, third trophic level; organisms that feed off primary consumers (typically carnivores or omnivores)
21. bottom of water, invertebrates here, nutrient rich sediment