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Unit 7 Chapter 1

TermDefinition
Habitat The place within an ecosystem where an organism lives; provides the biotic and abiotic factors an organism needs to survive and reproduce.
Population All the organisms of the same species that live in the same area at the same time.
Community All the populations living in an ecosystem at the same time.
Niche The way a species interacts with abiotic and biotic factors to obtain food, find shelter and fulfill other needs.
Predation The act of one organism, the predator, feeding on another organism, its prey.
Symbiosis A close, long-term relationship between two species that usually involves an exchange of food or energy.
Carrying Capacity The largest number of individuals of one species that an ecosystem can support over time.
Producer An organism that uses an outside energy source, such as the Sun, and produces its own food. Also known as an autotroph.
Consumer An organism that cannot make its own food and gets energy by eating other organisms. Also known as a heterotroph.
Detritivore An organism that consumes the bodies of dead organisms and wastes produced by living organisms.
Food Web A model of energy transfer that can show how the food chains in a community are interconnected.
Energy Pyramid A model that shows the amount of energy available in each link of a food chain.
Renewable Resource A natural resource that can be replenished by natural processes as quickly as it is used.
Nonrenewable Resource A natural resource that is used up faster than it can be replaced by natural processes.
Resource Depletion The exhaustion of one or more resources in an area.
Ecosystem A community of living things and their nonliving environment interacting as a unit.
Abiotic factor The nonliving parts of an ecosystem.
Biotic factor The living or once-living parts of an ecosystem.
Invasive species Harmful species not native to a region.
Food chain A simple model that shows how energy moves from a producer to one or more consumers through feeding relationships.
Created by: RWare
Popular Ecology sets

 

 



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