Ecology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| abiotic | nonliving factor such as air, water, sun
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| biotic | living factor in the environment such as plants and animals
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| homeostasis | maintaining a relatively stable environment; balance
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| organism/species | a living thing composed of organ systems that can breed and produce offspring
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| population | a group of one species that lives in the same area such as a group of frogs
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| community | a collection of two or more populations in one area such as grass, rabbits, and snakes
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| ecosystem | all the living and nonliving things in an area
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| biosphere | Earth
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| succession | a gradual change in a community that follows a disturbance
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| primary succession | succession that occurs when no soil is present ex. volcano
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| secondary succession | succession that follows a disturbance but does not remove the soil ex. wildfire
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| pioneer species | the first species to populate and area. Ex. is lichen and moss
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| climax community | a community which has been stable for many years
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| nitrogen fixation | BACTERIA changes the nitrogen into a form that living things can use
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| competition | occurs when organisms fight for the same resource and the same time ex. food, water, shelter
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| predation | one organism captures and eats another
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| symbiosis | two different species live close together
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| mutualism | both species benefit from the relationship ex. bees and flowers
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| commensalism | one benefits and the other is not helped nor harmed ex. barnacle and whale
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| parasitism | one benefits and the other is harmed ex. dog and tick
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| autotroph/producer | an organism that makes its own food through photosynthesis ex. plant
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| heterotroph/consumer | an organism that relys on others for food and must eat. ex. animal
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| herbivore | eats only plants
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| omnivore | eats both plants and animals
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| carnivore | eats only meat
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| decomposer | breaks down dead or organic matter ex. bacteria and mushrooms
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| 10% Law | the amount of energy passed onto the next energy level; the rest is lost as heat
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