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Chapter 1
Populations and Communities
| Question | Answer |
|---|---|
| Natural Selection | a characteristic that makes an individual better suited to its environment. |
| adaptations | the behaviors and physical characteristics that allow organisms to live successfully in their environment. |
| Nichie | A niche includes the type of food the organism eats, how it obtains this food,and wich other organiama use the organisms as food |
| Competition | the struggle between organisms to survive as they attempt to use the same limited resource |
| predation | An interaction in wich one organism kills another for its food |
| Predater | the orginsm that does the killing |
| Prey | the organism that gets killed |
| symbiosys | is a close relationship between two species that benifts at least one of the species |
| mutualism | a relationship in wich both species benifit |
| commensalism | a relationship in wich one species benfits and the other species is neither helped or harmed |
| parasitism | involves or organism living on or inside another and harming it |
| parasite | the organism that benifits |
| Host | the organism it lives on or in is called its host |
| orginism | a living thing |
| habitat | an enviroment the things an organism needs to live grow and reproduce |
| biotic factor | a living thing in a orginisms habitat |
| abiotic | a non living part of a organisms habitat |
| phtotsynthesis | the process in wich organisms along with sunlight and carbon dioxide use to make their own food |
| species | a group of organisms that are physically similar and can mate with each other and produce offsprings wich can mate and reproduce |
| population | the members of one species in a area |
| community | all the diffrent populations that live together |
| ecosystem | the community of one organisms that live in a area |
| ecology | the study of how living things interact with each other and their environment |
| estimate | is a approximate of a number |
| birthrate | is the births of a population in a certain amount of time |
| deathrate | is the number of deaths of a population that die in a certain amount of time |
| Immigration | is the movement of a population |
| emmigration | the leaving of a population |
| population density | the number of individuals in a area of a specific size |
| limiting factor | is a environ mental factor that causes a population the decrease |
| carrying capacity | the largest population that a area can hold |