| A | B |
|---|
| The largest population that an environment can support | carrying capacity |
| one species benefits and the other is neither helped or harmed | commensalism |
| when one organism kills and eats another | predation |
| All the members of one species in a particular area | population |
| conditions that cause populations to decrease | limiting factors |
| The nonliving parts of an ecosystem | abiotic factors |
| organisms that are physically similar and can reproduce | species |
| All the different populations that live together in an area | community |
| A symbiotic relationship in which both species benefit | mutualism |
| struggle between organisms to survive in a habitat with limited resources | competition |
| living parts of an ecosystem | biotic factors |
| symbiotic relationship in which one is helped and one is harmed | parasitism |
| organisms like fungi and bacteria that break down dead thigns | decomposers |
