Living things

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(No Transcript)
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Living things Nonliving things
ECOSYSTEM
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Living things in an ecosystem are called a
COMMUNITY
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Population Population Population
COMMUNITY
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All energy in a food web comes from the
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What makes ecosystems different?
Amount of water
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Amount of sunlight
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Type of soil
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Name the three members in every community.
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What causes ecosystems to change?

Natural causes
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Drought
Disease
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Fire
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Overpopulation
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What causes ecosystems to change?

Changes caused by humans
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Water pollution
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Air pollution
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Land pollution
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Construction
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How can humans help to prevent changes in
ecosystems?
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Use resources wisely
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Laws that control pollution
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Clean up litter
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Keep rivers and lakes clean