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35 Cards in this Set
- Front
- Back
Population
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a group of organisms of one kind that lives in one location
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Community
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a group of populations that live together
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Competition
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a kind of contest among populations
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Adaptation
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a characteristic that helps an organism compete in an ecosystem
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Symbiosis
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a relationship between different kinds of organisms
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Predator
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an animal that eats other animals
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Prey
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animals that are eaten
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Succession
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a gradual change in the kinds of organisms living in an ecosystem
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Extinction
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the death of all the organisms of a species
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Pollution
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any waste product that damages an ecosystem
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Acid Rain
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a mixture of rain and acids from air pollution that falls to the Earth
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Habitat
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an area were an organism can find everything it needs to survive
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Conservation
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the use of less of a resource to make the supplies last longer
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Reclamation
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the process of cleaning and restoring a damaged ecosystem
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what do organisms compete for in an ecosystem
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space, shelter, water, and food
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describe three kinds of symbiosis
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--both animals benefit
--only one animal benefits, second one does not get hurt --only one animal benefits but the second one gets harmed |
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give examples of the three kinds of symbiosis
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---rhino and bird, ant and aphids, barrnacles on whales, remorces on sharks, bacteria on viruses that cause disease, tape worms and round worms, misletoe on tree
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what symbiotic relationship is most like a predator-prey relationship?
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parasitism
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what happens during primary succession?
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small hardy plants start to grow on bare rock. in time they create a layer of soil that supports more plants.
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what are pioneer plants?
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first plants to grow...lichens
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what is a climax community?
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when an ecosystem becomes stable and changes stop
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what are three causes of succession
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--climate
--organisms living in an ecosystem --adding new plants or animals to an ecosystem |
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how can ecosystems be destroyed
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forest fires, volcanos erupting and human actions
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how is secondary succession different from primary succession?
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primary succession is very slow and starts on rocks and secondary succession takes place where there was a previous ecosystem
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Why is secondary succession faster than primary succession?
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soil is already there and soil usually contains seeds
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what is the main result of primary succession and of secondary succession?
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primary brings life to bare rock while secondary repairs a damaged ecosystem
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what kinds of organisms are most likely to become extinct
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have a small population, live only in one place; problems adapting; eat only one food; have few defenses
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How can a change in climate cause extinction
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if there is no sunlight plants will die and then herbivores and most carnivores will die
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what resources can be polluted
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water; air; soil
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what are some of the main sources of pollution
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chemicals, burning fossil fuels, trash
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besides polluting ecosystems, in what other ways do people damage them?
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fencing them off, cutting down forests, filling in wetlands
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what are some ways that people damage ecosystems
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cutting down forests
filling in wetlands putting up fences |
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what are three ways that people can conserve resources
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reduce
reuse recycle |
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list six ways you can help protect ecosystems
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reduce
reuse recycle throw away garbage use a bike instead of a car don't pollute the waters |
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why are wetlands important in reclamation
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they filter pollutants out of the water
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