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Science Ch.7 vocab
| Question | Answer |
|---|---|
| the parts of Earth where and the surrounding astomosphere where there is life | biosphere |
| all the populations of different species that live together at the same time | community |
| all the organisms of the same species in the same place at the same time | population |
| the demand for resources, such food, water, and shelter in short supply in a community | competition |
| anything that restricts the size of a population | limiting factor |
| the size of the populationcompared to the amount of space available | population density |
| potential growth of a population if could grow in perfect conditions with no limiting factors | biotic potential |
| largest number of individuals of one species that an eviroment can support | carrying capacity |
| birth rate | the number of offspring over a given period of time |
| death rate | the number of individuals that die of the same time period |
| extinct species | species that has died out and none are left |
| endangered species | species at danger of being extinct |
| threatend species | a species at risk, but not yet endangered |
| instinctive seasonal movementof a population of organisms from one place to another | migration |
| the place within an ecosystem where an organism livies | habitat |
| what a species does in its habitat to survive | niche |
| organisms that get energy from the enviroment, such as sunlight and make their own food | producers |
| organism that get their energy by eating other organims | consumers |
| close, long-term relationship between two species that usually involves an exchange of food or energy | symbiosis |
| symbiotic relationship with both partners benifit | mutualism |
| symbiotic relationship that one species benifits and the other is neither harmed nor helped | commensalism |
| symbiotic relationship that benifits one but one is harmed | parasitism |
Created by:
alwaystudy
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