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20 Cards in this Set
- Front
- Back
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What do organisms compete for in an ecosystem?
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Food, water, shelter and space
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Describe three kinds of symbiosis
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mutualism-when both orgamisms have a benefit
Commonsalism- only one organism benefits and the other one doesn't Parasitism- One organism benefits when the other is harmed |
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give 3 examples of symbiosis
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mutualism- rhino and bird
Parasitism- mistletoe on trees Commensalism- barnicles on whales |
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what symbiotic relationship is most like a predator and prey relationship
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Parasitism- because one organism is harmed and the other is benefited
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What happens during primary succession
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It begins with a bare rock and when plants grow on the rock such as linchens harm the ecosystem
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What are pioneer plants
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Pioneer plants such as Linchens are plants that can grow without soil and can survive harsh conditions.
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What is a climax community
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It is an ecosystem of trees and other plants that is stable and is not moving onto a new stage of growth
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What are three causes of succession
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-A change in climate
-The actions of animals living there -The introduction of a new plant or animal |
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How can ecosystems be destroyed
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forest fire
Earthquakes Volcanos Actions taken by humans Tornados |
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How is secondary succession different from primary succession
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Secondary succession takes place in areas that have previosly been ecosystems.
Primary succession begins with a bare rock |
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Why is secondary succession faster than primary succession
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The area already has soil with seeds in it, the soil has enough nutrients to support medium size or larger plants right away.
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What is the main result of primary and secondary succession
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Primary succession brings life to a bare rock. Secondary succession brings life to a damaged ecosystem
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What kinds of organisms are most likely to become extinct
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1. Have to few of populations
2. Live only in one place 3. Have problems adapting into new environment 4. Eat only certain foods 5. Have few defenses against predators |
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How can a change in climate cause extinction
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When the climate changes some populations die off and it's remaining numbers are too small and they die off.
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What resources can be poluted
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air, water and land
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What are some of the main resources of pollution
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fertilizer and other chemicals used on crops and lawns are decaying organic matter, burning fossil fuels and dumping toxic waste
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Besides polluting ecosystems in what other ways do people damage the ecosystem
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1. Building fences
2. Cutting down forrest 3. Filling in the wet lands 4. Introducing new plants and animals |
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What are some ways that people damage ecosystem
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Cutting down forests to build a town with factories, malls and houses
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What are 3 ways that people can conserve resources
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1. Re-using plastic
2. Taking two minute showers 3. Using re-chargeable batteries |
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Why are wetlands important in reclamation
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They filter the pollution that is in the water.
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