gen eco : chap 3

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Last updated 10:02 AM on 9/13/26
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11 Terms

1
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trophic levels

feeding position of an organism in an ecosystem

2
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producers

trophic levels

  • 1st trophic level

  • grass, trees, algae, phytoplankton, crops


3
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primary consumers

trophic levels

  • 2nd trophic level

  • grasshopper, cow, rabbit, ant, caterpillar


4
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secondary consumers

trophic levels

  • 3rd trophic level

  • rat, sparrow, frog


5
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tertiary consumers

trophic levels

  • 4th trophic level

  • snake, owl


6
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quarternary

trophic levels

  • 5th trophic level

  • highest level of food chain

  • often few or no natural predators

  • eagle, lions


7
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food chain

a sequence that shows how energy and nutrients are transferred from one organism to another through feeding relationships

8
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pyramid of energy

shows energy flow through trophic levels

9
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pyramid of biomass

represents the total living mass at each level

10
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1st law of thermodynamics

“Energy is not created nor destroyed”

11
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2nd law of thermodyanmics

“Some energy is lost as heat”