| A | B |
|---|
| Scavenger | finds scraps of animals scavengers food is already dead |
| Food Chain | starts at the sun, goes to grass, goes to animals ( sequence of feeding relationships) |
| Salinity | saltiness of water |
| decomposer | an organism that breaks down other organisms (organisms in the soils worms bacteria etc) |
| Biodiversity | is the degree of varation of life forms within a given ecosystem |
| Biotic factors | Living things in the environment |
| Niche | is a term describing the relational position of a species or population in its ecosystem to each other |
| Limiting Factors | will run out if overused goes extinct |
| greenhouse gasses | carbon dioxide given off by cars |
| extinction | whole animal population dies |
| Apex Predator | Predators that are not preyed upon as healthy adults in the wild ( Polar Bears) |
| Estuary | a body of water where fresh water and salt water mix |
| Water Shed | is an area of land where all of the water that is under it or drains off of it goes into the same place |
| salinity | salt content of the water |
| Filter feeders | Oysters |
| Why are Oysters important | they keep the water clean |
| challenges to the Chesapeake bay | Pollution and fertilizers |
| What is growingn becaue of fertilizers | Algal blooms |
| Restoration | stop polluting |
| Herbivore | organisms eats plants |
| producer | plants that make food for others and themselves |
| Keystone Species | type of animal that keeps organisms organized |
| Poineer species | first species that starts in an ecosystem |
| Symbiosis | when two organisms work together or live off from each other sometimes one benefits sometikmes both benefit but both survive |
| Runoff | water that runs off from land and goes into streams |
| water shed | Area around a body of water that contributes to the body of water |
| algal bloom | algae that covers the top of water because of runoff |
| erosion | water takes soil to another place |
| Turbidity | is water that is not clear |
| Dead Zone | when nothing is living in a specific area of the ecosystem ( ocean) |
| Non-point source pollution | pollution that we don't know where it came from |
| population density | shows how much of a species is in a certain area amount of organisms in a particular area. |
