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Ecosystem (Symbiosis: A close, longterm relationship between two species…
Ecosystem
Symbiosis: A close, longterm relationship between two species that usually involves an exchange of food or energy.
Mutualism: Interactions between organisms of two different species, in which each organism benefits from the interaction in some way. For example: When a Bee pollenates a flower, and the flower gives nectar to the bee.
Commensalism: an association between two organisms in which one benefits and the other derives neither benefit nor harm. For example: A bird nesting in a tree. The bird has a place to raise its young, and the tree is neither helped nor harmed.
Parasitism: An interaction where one species (parasite) benefits and the other species (host) is harmed.
For example: The mosquito (parasite) benefits from the blood of a human (host).
An Ecosystem contains all the nonliving and living parts of the environment in a given area. Example: Garden
Abiotic Factor: The nonliving parts of an ecosystem.
For example: Rocks
Biotic Factor: The living or once-living parts of an ecosystem.
Example: Decaying animal bodies and plants
Habitat: The place where an organism or a community of organisms lives, including all living and nonliving factors or conditions of the surrounding environment. For example : Desert
Population: All the organisms of the same group or species, which live in a particular geographical area.
For example: A population of Lions
Community: All the populations living in an Ecosystem at the same time.
For example : All the organisms living on a dead tree.
Niche: The way a species interacts with Abiotic and Biotic factors to obtain food, find shelter, and fulfill other needs.
Example : A rabbit is a herbivore, a prey, a host, and it feeds her kids milk.
Predator: An organism that hunts and kills other organisms for food.
Prey: An organism caught and eaten by a predator.
the preying of one animal on others
Competition: Describes interactions between two or more organisms that need the same resource at the same time. Example: Lions and Cheetahs of the African savanna compete for the same Antelope and Gazelle prey.
Population changes: The number of individuals in a population is always changing. It can increase when offspring are produced, and can decrease when individuals die or move away.
Population Density: The size of a population compared to the amount of space available. A high population density means individuals live closer together.
Carrying Capacity: The largest number of individuals of one species that an ecosystem can support over time. If a population exceeds its carrying capacity the area will become over-populated.
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