| A | B |
|---|
| headwaters | upland reivers and the source of rivers |
| mouth | point downstream where the waters empty into another body of water |
| immature river | one flowing over a steper gradient (mountains) |
| mature river | decreased gradient; broad, flatter-floored valley with meandering channel and floodplain |
| turbidity | opaques brownish color of rivers due to clay sediment suspended in the water |
| # of NC water drainage basins | 17 |
| one of oldest rivers in North America(1) | New River (1) |
| only river in NC and one of a few in the world that flows north(2) | New River (2) |
| andronomous fish | hatch in freshwater, live their adult life in oceans; and migrate back to freshwater stream to reproduce |
| catadronomous fish | hatch in ocean, spend adult life in freshwater rivers, return to ocean to reproduce |
| ex. of anadronomous fish | salmon |
| ex. of catadronomous fish | American eel |
| Neuse River waterdog | salamander found only in NC |
| thermal pollution | heated river water used for cooling heat produced from industry |
| watershed | huge area of land where all precipitation from this area collects in a particular river |
| point source pollution | enters a river from a source that can be identified |
| non-point source pollution | comes from many different sources and cannot be traced back to one specific point |
| eutrophicationan | excess of nutrients causes an algal bloom; when nutrients are gone, the plants die; bacteria break down plant matter; bacteria use up O2; causes "fish kills" |
| biomagnification | higher-level consumers have a magnified amount of toxins in their body |
| DDT | a pesticide used in 1950's - 1970's (caused bird eggshells to be thin) |
| succession | life span of a pond; it does not always stay a pond -> it will eventually fill up |
| climax community | forest stage(beech-maple) OR a prairie meadow |
| littoral zone | along the edges of ponds/lakes extending from shore outward as far as rooted plants grow |
| limnetic zone | middle zone of a lake from open-water vegetation to point at which light does not penetrate |
| emergent plants | skunk cabbage, arrow arum, water plaintain, pickerelweed, cattails, bulrush, reeds |
| submergent plants | pondweed, bladderwort, hornwort, coontail, fanwort, elodea |
| floating leaf plants | watershield, yello water lily, American lotus, white water lily, fanwort |
| free-floating plants | duckweed, watermeal, mosquito fern |
