8th Grade Science - Ecology & Environment Study Guide
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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| Autotroph | an organism that can make its own food
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| Carrying Capacity | maximum population size of species in an environment
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| Commensalism | a relationship in which one organism benefits and the other is not harmed
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| Heterotroph | an organism that must obtain its energy from an outside source
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| Host | the organism that is harmed in a parasitic relationship
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| Mutualism | a relationship in which both organisms benefit
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| Natural Selection | process by which organisms that inherit helpful traits tend to reproduce more successfully than others
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| Parasite | an organism that causes harm to its host
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| Parasitism | a relationship in which one organism benefits and the other is harmed
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| Phytoplankton | Plankton consisting of microscopic plants
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| Symbiosis | a relationship in which two organisms live in close association with others
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| Zooplankton | plankton consistsing of small animals.
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| autotroph examples | rose, tree, grass
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| heterotroph examples | foxes, snakes, owl
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| Example of predator-prey relationship | snake - mouse
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| Example of parasite-host relationship | tapeworm - cow
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| Example of mutualism relationship | oxpeckers feed on ticks found on rhinoceros
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| Example of communalistic relationship | hermit crab lives in shell that was made and left by snails
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| Which organisms are the decomposers in this specific food web? | bacteria/fungi
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| Which organisms are competing for the "Forage Fish" Group? | salmon/Lake Trout, cormorant, herring gull, snapping turtle, eagle
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| If the Salmon/Lake Trout were removed from this specific food web, how would this affect the forage fish population? | the numbers would increase
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| What is the relationship between the Eagle and the Salmon? | Eagle=predator; Salmon=prey
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| What is the relationship between the Plankton and the Waterfowl in this specific food web? | Plankton=producer; Waterfowl=Herbivore
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| According to the specific food web, which organism has the most types of food? | Eagle
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| In a typical predator-prey relationship of over 10 years, what happens to the level of predators? | there are few in the beginning, then increase midstream then decrease
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| In a typical predator-prey relationship of over 10 years, what happens to the level of prey? | there are many in the beginning, then slowly decrease midstream to where there are few
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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