| A | B |
|---|
| ecosystem | all the organisms living together with their physical environment |
| biotic factors | living and once living organisms |
| abiotic factors | nonliving parts of an ecosystem |
| neighborhood, forest, tundra, ocean abandoned lot | examples of an ecosystem |
| leaves on the ground, animals, plants | examples of biotic factors |
| air, water, sand, rocks, light, temperature | examples of abiotic factors |
| organisms | individual living thing |
| species | a group of organisms that reproduces fertile offspring |
| population | all the members of the same species that live in the same place and time |
| communities | many different species that live & interact with each other |
| habitat | a place where an organism lives |
| evolution | a change in the genetic characteristics from one generation to the next |
| adaptation | inherited traits that increase the chance of survival & reproduction |
| coevolution | two or more species that evolve because of long-term interaction |
