Across
- 1. an area of low-lying, uncultivated ground where water collects; a bog or marsh.
- 4. is the channel occupied or formerly occupied by a stream.
- 6. physical rather than biological; not derived from living organisms.
- 7. a grasslike plant that lives in or close to the sea, especially eelgrass.
- 8. the concentration of dissolved oxygen, bacteria levels, the amount of salt
- 11. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
- 12. to the large source of carbon-based compounds found within natural and engineered, terrestrial, and aquatic environments.
- 13. water not of the sea
- 15. a group of people living in the same place or having a particular characteristic in common.
- 16. relating to or resulting from living things, especially in their ecological relations.
- 17. a substance that provides nourishment essential for growth and the maintenance of life.
Down
- 1. the confining cut of a stream channel and is usually identified as the point where the normal stream flow has wrested the vegetation.
- 2. matter that settles to the bottom of a liquid.
- 3. the bed or channel in which a river flows.
- 5. a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply.
- 8. land consisting of marshes or swamps; saturated land.
- 9. hold back or confine
- 10. the replenishment of an aquifer by the absorption of water.
- 14. a reduced level of oxygen in the water