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chapter 1
populations and communitities
Question | Answer |
---|---|
organism | living thing |
habitat | an enviroment that provides things it needs to live, grow, and reproduce. |
Biotic Factors | a living part of an organism habitat. |
Abiotic factors | are the nonliving parts of an organisms habitat |
photosynthesis | the process in which organisms use water along with sunlight and carbon dioxide, to make their own food in a process called photosynthesis. |
species | A species is a group of organisms that are physically similar and can mate with each other and produce an offspring that can also mate and produce. |
population | The 400 million Prarie dogs in the Texas Town are on example of a population. |
community | To be considered a community, the different populations must live close enough together to interact. |
ecosystem | The community of organisms that live in a particular area along with their nonliving surroundings. |
ecology | ecologists are scientists who study ecology. |
estimate | an approximation of a number, based on reasonable assumptions. |
birthrate | Of a population is the number of deaths in a population in a certain amount of time. |
deathrate | is the number of deaths in a certain amounts of time. |
immigration | means moving into a population. |
emigration | means leaving a population. |