| A | B |
|---|
| biosphere | part of the Earth that supports life |
| ecosystem | all the living and nonliving things in an area |
| ecology | study of interactions between organisms and their environment |
| population | all the organisms in an area belonging to the same species |
| community | all the populations of different species |
| habitat | place where an organism lives |
| limiting factor | anything that can restrict the size of the population |
| carrying capacity | largest number of individuals an ecosystem can support |
| producer | an organism that makes its own food, plants or alga |
| consumer | organism that gets energy by eating other organisms |
| symbiosis | any close relationship between species |
| mutualism | type of relationship in which both benefit |
| commensalism | type of relationship in which one benefits and the other is unharmed |
| parasitism | a type of relationship in which one benefits and the other is harmed |
| niche | an organisms role in its environment, how it survives, gets food, etc. |
| herbivore | an animal that eats producers(plants) |
| carnivore | an animal that eats consumers(animals) |
| omnivore | an animal that eats both producers and consumers |
| organism | a living thing |
| Decomposer | a living thing that eats dead things and waste |
| adaptation | any variation that makes an organism better suited to its environment |
| Food Chain | model of the feeding relationships in an ecosystem |
| predator/prey | an organism hunts another organism |
| competition | more than one organism seeking the same resource |
