| A | B |
|---|
| ecosystem | all living and nonliving things that exist and interact in one place |
| elevation | how high something is above sea level |
| environment | all the living and non living things that surround an organism |
| organism | a living thing |
| Piedmont | an area of gently rolling land between a coast and mountains |
| estuary | a place near the coast where fresh water from streams and rivers mixes with ocean water |
| marsh | a wetland in which mostly grasses and other soft stem plants grow |
| swamp | a wetland in which mostly trees and other woody plants grow |
| wetland | an area of low land covered by water for most of the year |
| barrier island | a sandy strip of jland offshore that protects the mainland |
| coast | a place where an ocean meets land |
| continental shelf | a gently sloping area of land at the ocean bottom, near the shore |
| dune | a mound of sand formed by wind and moving water |
| reef | a rock ridge on the ocean bottom |
| sandbar | a long ridge of sand in shallow water, usually close to a beach |
