| Term | Definition |
| Natural Selection | Living organisms changed as the abiotc & biotic factors in their environments changed. The best-adapted members of a species will survive & reproduce |
| Three-spine sticklebacks | After lake were formed in BC lakes 13 000 years ago, these marine fish adapted to their freshwater environmenment, & a new species were created |
| Adaptations | enable species to survive in a particular environment. These characteristics have resulted from changes that occur in the species over time |
| Galapagos Finches | 13 species of birds on an island developed from a single specie of bird from the mainland of South America |
| Adaptive Radiation | change from a common ancestor into a number of different species that `radiate out` to inhabit different niches |
| Ecological Succession | term scientists use to refer to changes that take places over time in the types of organisms that live in an area. |
| Primary Succession | occurs in an area where no soil exists |
| Pioneer Species | lichens & other plants that are the 1st organisms to survive & reproduce in an area |
| Abiotic factors | Soil, Light, Moisture, nutrients are... |
| Climax community | process of primary succession leads to teh developement of a mature community |
| Secondary Succession | Occurs as a result of a disturbance to an area that already has soil |
| Flooding | When volume of water exceeds the ability of the water body to contain it |