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Ecosystem (Population changes (Populations increase when offspring are…
Ecosystem
Population changes
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If a drought reduces plant growth, less food is available for plant eaters, which can lead to a decrease in plant eater populations
when Individual live closer together they increase competition, and easier transmission of disease(high population
population greater than carrying capacity: area becomes overpopulated; individuals move away or die out
good growing conditions or the disappearance of competing species; carrying capacity greater than population
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Carrying capacity: it is the largest number of individuals of one species that an ecosystem can support over time.
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If all members of a population die or move away from an area, that population becomes extinct
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Abiotic factors:The Nonliving parts of an Ecosystem are called Abiotic factors
ex: Sunlight, water, soil and air
Biotic factor:The living or once-living parts of an ecosystem
ex: Living organisms, wastes produced by living organisms and the decayed remains of dead organisms
Habitat is the place within an ecosystem that provides the biotic and abiotic factors an organism need to survive and reproduce.
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Niche: It is the way a species interacts with abiotic and biotic factors to obtain food, find shelter and fulfill other needs
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Symbiosis: is a close, long-term relationship between two species that usually involves an exchange of food or energy
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Commensalism: It is type of symbiosis where one species benefit from the relationship and the other species is neither harmed nor benefited
Parasitism: It is type of symbiosis where one species ( the parasite ) benefits and the other species ( the host ) is harmed
Competition: describes interactions between two or more organisms that need the same resource at the same time
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