key terms on population and interaction
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| Symbiosis | a close, long-term relationship between 2 or more species
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| Parasitism | one species lives on or within a host organism and receives nourishment from the host, whereas the host is harmed by the interaction.
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| Mutualism | interactions that are beneficial to the growth, survival, and/or reproduction of both interacting species.
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| commensalism | One species receives benefits from the association and the other species is unaffected
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| Predator-prey | It always results in the death of the prey and the absorption of the prey’s tissue through consumption.
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| ecosystem | a system of interactions and inter-relationships between the living and non-living components in an environment
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| organism | A single individual, such as one tree, one crow, or one bacteria
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| species | Closely related organisms that can breed and produce fertile offspring
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| population | A group of individuals of the same species living in a specific area
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| community | A group of populations that interact in a given environment
These populations depend on one another for food, shelter, or other survival needs
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| diversity | The measure of the number of different species in an ecosystem.
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| abiotic factors | the nonliving parts of an ecosystem
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| biotic factors | the living parts of an ecosystem
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| carrying capacity | the maximum number of individuals (organism) that an area of land can support, usually determined by their food requirement
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| J-shaped graph | this graph shows a population experiencing an ideal growth pattern. There are no limiting factor and it describes growth of a species new to an ecosystem with no predators.
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| boom-bust graph | this graph shows an exponential growth of a species to a certain point which causes the population to decrease dramatically.
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| s-curve graph | a graph that shows a population that experiences exponential growth followed by a plateau due to limiting factors. When the graph plateau, it has reached its carrying capacity.
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| linear graph | a graph that shows constant growth or decline because birth rate equals death rate
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| limiting factor | an environmental factor that limits or slows the growth or activities of an organism
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| competition | the struggle between individuals of the same or different species for food, space, light, etc, when these are inadequate to supply the needs of all
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| Birth rate | The ratio of total live births to total population in a specified community or area over a specified period of tim
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| Death rate | The ratio of total deaths to total population in a specified community or area over a specified period of tim
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