| A | B |
|---|
| Primary productivity | The rate at which food is made from inorganic substances by photosynthetic and chemosyntheticorganisms |
| Spring overturn | The warming of surface water that sinks and forces colder water from below to rise to the surface bringing nutients and oxygen to the surface |
| Eutrophic | Shallow, rich body of water that contains many nutrients and many organisms |
| Limiting factor | A resource found in a ecosystem that has a limited supply |
| Thermal pollution | The addition of excessive amounts of heat to a lake |
| Species diversity | The number of species a comunity contains |
| Oligotrophic | A body of fresh water that contains few nutrients and few organisms |
| Fugitive Species | fast growing plants that are quick to die out when forced with competition |
| Fire-Maintained communities | community that relies on fire to maintain the species with in the community |
| Primary succession | Originally lifeless land that lichens & moss are first to inhabit. |
| Secondary succession | Changes that take place in disturbed area that have not been totally stripped of soil. |
| Climax community | Community that forms if land is left undisturbed. |
| Desertification | Process of turning arrid land into deserts. |
| Epiphyte | Any of various plants that grow on other plants for support, but draw nourishment from the air & rain instead of their host. |
| Biome | Area of the Earth that has the same type of climate & is dominated by the same types of flora. |
| Community | is the different types of organism living in the same area |
| Population | is a group of the same speices in a given area |
| Biosphere | is the layer of the earth that supports life |
| trophic level | transfer of enrgy through each level of food chain |
| Pyramid of energy | a model that shows the amount of energy that is transfered though each trophic level |
