Question | Answer |
organism | a living thing |
habitat | an environment that provides the things the organism needs to live,grow and reproduce |
biotic factors | a living part in an organism's habitat |
abiotic factors | a nonliving thing part of an organism's habitat |
photosynthesis | the process in which organisms use water, along with sunlight and carbon dioxide to make their own food |
species | a group that are physically similar and can mate with each other and produce offspring that can also mate and reproduce |
population | all the members of one species in a particular area |
community | all the different populations that live together in an area |
Ecosystem | The community of organisms that live in a particular area along with their nonliving surrounding. |
Ecology | The study of how living things interact with e ach other and their environment |
estimate | An appoximation of a number based on reasonable assumptions |
birth rate | the number of births in a population in a certain amount of time in a certain area |
death rate | the number of deaths in a population in a certain amount of time ina cerain area |
immigration | moving into a population |
emmigration | leaving a population |
population density | the number of individuals in an area of specific size |
limiting factor | an environmental factor that causes a population to decrease |
carring capacity | the largest population that an area can support |
natural selection | A process by which characteristics that make an individual better suited to its environment become common in a species |
adaption | the behavior and physical characteristics the allow organisms to live sucessfuly in their envirenment |
niche | the role of an organism in its habitat or how it makes its living |
compitition | the struggle between organisms to survive as they attempt to use the same limited sorce |
predation | an interaction which on organism kills another organism for food |
predator | the organism that does the killing in a predition interaction |
prey | an organism that is killed and eaten by anther organism |
symbosis | a close relationship between two species that benefits at least one of the species |
mutualism | The relationship between two species in which both species benefit. |
commensalism | A relationship between two species in which one species benefits and the other is neither helped or harmed |
parasitism | A relationship in which one organism lives on or in a host and harms it. |
parasite | The organism that benefits by living on or in a host in a parasitism interaction |
host | The organism that a parasite lives in or on in a parasitism interaction |