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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 |