| A | B |
|---|
| niche | an organism's particular role, or how it makes its living |
| competition | the struggle between organisms to survive in a habitat with limited resources |
| predation | an interaction in which one organism kills and eats another organism |
| prey | the organism that is killed |
| natural selection | the changes that make organisms better suited to their environment occur by a process called this |
| competition, predation, symbiosis | three major types of interactions among organisms |
| symbiosis | a close relationship between two species that benefits at least one of the species |
| mutualism, commensalism, parasitism | three types of symbiotic relationships |
| mutualism | a relationship in which both species benefit |
| commensalism | a relationship in which one species benefits and the other species is neither helped nor harmed |
| parasitism | involves one organism living on or inside another organism and harming it. |
| parasite | the organism that benefits is called |
| host | the organism it lives on or in is called |
| camouflage | an organism's ability to resemble it's environment |
| warning colors | a defense strategy in which an organism draws attention to itself |
| mimicry | organism's resemblance to another organism to fool predators into staying away |
