Across
- 2. benthos the community of organisms that live on or in the floor of a body of water, including rivers, lakes, estuaries, and oceans.
- 3. water with a salt content lower than about 0.05%; for comparison, sea water has a salt content of about 3.5%.
- 4. a wetland in which trees or woody shrubs predominate.
- 5. a wetland dominated by reeds and other grass-like plants.
- 7. an area in which the water contains low or no dissolved oxygen causing a condition known as hypoxia.
- 11. nonliving; not derived from living organisms; inorganic.
- 15. island—a long narrow island of sand that runs parallel to the mainland.
- 16. of or having to do with life or living organisms; organic.
- 20. something that is found in nature that is useful to humans.
- 23. a group of plants and animals living and interacting with one another in a particular place.
- 26. the number and variety of living things in an environment.
- 28. water with about 3.5% salt content; ocean water or seawater.
- 29. water that has more salinity than freshwater, but not as much as saltwater; often a result of mixing of freshwater and saltwater in estuaries.
- 30. a low-lying area where the soil is saturated with water at least seasonally, and supports plants adapted to saturated soils.
- 32. a large body of standing water.
- 33. oxygen gas absorbed by and mixed into water.
Down
- 1. the fitness of a water source for a given use, such as drinking, fishing or swimming.
- 6. artificial or natural lake built by placing a dam across a stream or river and used to store and often regulate discharge of water; underground storage area of water, such as in an aquifer.
- 8. material that comes from plants or animals either dead or alive that is capable of decay; important in the transfer of nutrients from land to water.
- 9. a partly enclosed body of water along the coast where one or more streams or rivers enter and mix freshwater with saltwater.
- 10. water that is so full of small particles, such as silt, that the water is no longer transparent but instead appears cloudy.
- 12. a body of water partially enclosed by land that is directly open or connected to the ocean.
- 13. the bottom of a stream or river channel.
- 14. impound—reservoirs created in river valleys by placement of a dam across the river.
- 17. a body of standing water small enough that sunlight can reach the bottom across the entire diameter.
- 18. silt, sand, rocks and other matter carried and deposited by moving water.
- 19. the natural environment in which an organism normally lives, including the surroundings and other physical conditions needed to sustain it.
- 21. study of the relationships living organisms have with each other and with their environment.
- 22. water that soaks into and refills an aquifer.
- 24. a chemical that an organism needs to live and grow that is taken from the environment; it can be an organic or inorganic compound.
- 25. a barrier or structure, natural or made by humans or animals, that is places across a stream or river to hold water back from flowing downstream.
- 27. submerged rooted aquatic plants that tolerate salinity.
- 28. the shoulder-like sides of the stream channel from the water’s edge to the higher ground nearby.
- 31. aquatic invertebrates with exoskeletons used as food, including various species of mollusks and crustaceans, such as crabs, shrimp, clams, and oysters.