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chapter 3
nature
Question | Answer |
---|---|
organisms | a living thing |
habitat | the type of environment that helps the animal live and grow |
biotic factors | part of a habitat that provides the living and non-living part of a habitat |
abiotic factors | are the non-living part of a habitat |
photosynthesis | sunlight,water,oxygen,temperature, and soil |
species | a group of organisms that are physically similar |
population | a group of two or more organisms |
community | a lot of populations close enough to interact with each other |
ecosystem | when animals make mountains,streams,deep oceans, and evergreen forests their homes |
ecology | how an organism reacts to changes to it's habitat |
estimate | an approximation of a number, based on reasonable assumptions |
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 | moving into a population |
emigration | leaving a population |
carrying capacity | the amount of organisms in a habitat |
population density | number of individuals in a unit area |
limiting factor | an environmental factor that causes a population to decrease |