| A | B |
|---|
| environment | everything around an organism |
| habitat | particular place where an organism lives |
| population | group on individuals of the same species that live in an area at the same time |
| community | all of the populations that live and interact with each other in an area |
| niche | the role of an organism within its community |
| ecosystem | community of organisms interacting with one another and with the environment |
| producer | makes its own food |
| consumer | unable to make its own food, obtains food from other consumers or from producers |
| decomposer | organism that gets food by breaking down dead organisms into nutrients |
| food chain | model of how the energy in food is passed from organism to organism in an ecosystem |
| food web | combination of the overlaping food chains in an ecosystem |
| varied diets | many different sources of food |
| water cycle | evaporation, condensation and precipitation |
| limiting factor | any condition that influences the growth or survival of an organism or species |
| non living limiting factors | temperature, wind, pollution in the air or water, amount of light, |
| living limiting factors | competition and predator-prey relationships |
| prey | the animals predators eat |
| predator | animals that catch and eat other animals |
| adaptation | characteristic that increases the chance of an organism to survive in its environment |
