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16 Cards in this Set
- Front
- Back
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What are autotrophs?
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self feeding organisms
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what do saprophytes eat?
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dead organic matter
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what do scavengers eat?
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prey-meat. dead matter
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symbiosis
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a close nutritional relationship between two organisms
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commensalism
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benefit/unaffected
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mutualism
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benefit/benefit
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parasitism
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benefit/harmed
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what is a niche?
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the role organism play in enviorment. what they eat, what eats them, interactions. so on.
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what happens when two organisms occupy the same niche?
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competition
squirrel-chipmunk |
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what do humans to do ecosystems?
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disrupt them
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give three examples of how humans impacted the stability of an ecosystem?
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-biocide
-urbanization -pollution -landfills |
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what is biodiversity?
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number of different types of organisms that live on the earth
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what is the value of biodiversity?
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genetics/medicine/prevention of ecosystem collapse
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what is biological magnificcation?
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the process of passing toxic substance through a food chain. this results in a high level of the toxins in higher order consumers.
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give three examples of how humans have tried to restore the enviorment
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1. pollution control
2. recycling 3. soil conservation 4. forest conservation 5. biological control of pest -alternativees to pesticidde |
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what is the difference between a community and an ecosystem?
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the physical enviorment
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