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chapter 1
populations and Communities
| Question | Answer |
|---|---|
| organism | a living thing |
| habitat | an envirment |
| biotic factor | a living part of a organisms habitat |
| abiotic factor | a nonliving part of a organisms habitat |
| Photosythisis | The prosses in which plants use water along with carbon dioxide to make its own food |
| Species | A group of organisms that are physically simaler and can mate and reperduce offspring and reperduce |
| Populations | How many of the species are in a area |
| Community | More than one species in a area |
| Ecosystem | A place where there are living things and nonliving things |
| Ecology | The effects of different environments |
| Emigration | Leaving a population |
| Estimate | An approximation of a number based on reasonable assumptions |
| Birth rate | The number of births in a population in a certain amount of time |
| Death rate | The number of deaths in a certain amount of time |
| Immigration | Moving into a population |
| Population density | The number of individuals in a specific area |
| Limiting factor | An environmental factor that causes a population to decrease |
| Carrying capacity | The largest population that an area can support |
| Natural selection | A process by which charecteristic that make individual better suited to its envirment become more common in a species |
| Adaptations | A behavior or physical charecteristic that allows an organism to live successfully in its envirment |
| Niche | The role of an organism in its habitat,or how it makes its living |
| Competition | The struggle between organisms to survive as they attempt to use the same resource |
| Predation | An interaction in which one organism kills another |
| Predator | The organism that does the killing |
| Prey | The organism that gets killed |
| Symbiosis | A close relationship between two species that benefits something good for for at least one of them |
| Mutualism | A close relationship in which both species benefit |
| Commensalism | A relationship in which one species benefits and the other species is neither helped nor harmed |
| Parasitism | One organism living on or inside another organism and not harming it |
| Parasite | The organism that benefits |
| Host | The organism that does not benefit |
Created by:
Jgood
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