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Ecosystem (Extinction: (If all populations of a species disappears from…
Ecosystem
Extinction:
If all populations of a species disappears from Earth, the entire species becomes extinct.
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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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Symbiosis: is a close, long-term relationship between two species that usually involves an exchange of food or energy.
Types of symbiosis:
1- Mutualism:It is type of symbiosis where both species benefit from the relationship. ex.Rhino and tick bird, tick bird eats ticksoff of rhino.
2- Commensalism:It is type of symbiosis where one species benefit from the relationship and the other species is neither harmed nor benefited. ex.Birds nest in trees.
3- Parasitism:It is type of symbiosis where one species ( the parasite ) benefits and the other species( the host ) is harmed. ex. striga plant roots rob a host plsnt of water.
Ecosystems contains all the nonliving and living parts of the environment in a given area.
ex.The Garden
Abiotic Factor:is the Nonliving parts of an Ecosystem. They include :Sunlight, water, soil and air.
Biotic Factor: is the living or once-living parts of an ecosystem.They include :Living organisms, wastes produced by living organisms and the decayed remains of dead organisms.
Habitats: is the place within an ecosystem that provides the biotic and abiotic factors an organism need.ex.The plant leaves provide a place for adult dragonflies to lay
eggs.
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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.
Competition: describes interactions between two or more organisms that need the same resource at the same time.
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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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