Question | Answer |
organism | a living thing |
habitat | An environment that provides the things that the organisim needs to live grow and reproduce. |
biotic factors | the living parts of a habitat |
abiotic factors | the nonliving parts of an organisms habitat |
photosynthesis | the process in witch plants and algae make food using water and carbon dioxide |
species | a group of animals that are closely related |
ecology | the study of how living things interact with each other and their own environment |
estimate | an approximation of a number based on reasonable assumption |
population | all the members of one species in a particular area |
community | all the populations in an area |
ecosystem | the community of organisms that live in a particular area along with their nonliving surroundings |
birth rate | the number of births in a certain amount of time |
death rate | the number of deaths in a certain amount of time |
immigration | means moving into a population |
emigration | means moving out of a population |
population density | the number of individuals in an area of a specific species |
natural selection | individuals that have uniqe characteristics are beat suited for their environment tend to survive and produce an offspring |
adaptions | the behaviors and physical characteristics that allow organisms to live successfully in their environment |
natural selection | individuals that have uniqe characteristics are best suited for their environment tend to survive and produce offspring. |
adaptations | the behaviors and physical characteristics that allow organisms to live succsesfully in their environment |
niche | the role of an organism in its habitat or how it makes its living |
competition | the struggle between organisims to survive as they attemt to use the same limited resource |
predation | an interaction in witch one organisim kills another for food |
predator | the organism that does the killing |
prey | the organism that is killed |
symbiosis | a close relationship between two species that benifits at least one of the species |
mutualisim | a relationship in witch both species benifit |
commensalisim | a relationship in witch one species benefits and the other in neither helped or harmed |
parasitisim | involves one organisim living on or inside of another organism |
parasite | the organism that benifits |
host | the organisim that the parasite lives on |