Launch

• Read the article on test taking tips for multiple choice and true/false questions

1

Bring me your soda cans!

• Uncrushed• Preferably green but all colors excepted• Also preferably with the tabs still on

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Energy Diagramsin an

Ecosystem

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I will be able to analyze flow of energy through a food web

Food WebFood Web

• a series of steps in which organisms transfer energy by eating or being eaten

• Arrows go from the organism providing energy to the organism receiving that energy

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Trophic LevelTrophic Level

• each step in a food chain or food web– 1st level- Producers– 2nd Level and up- Consumers– Final level- Decomposers

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Trophic LevelTrophic Level• Producer- An autotroph, the first step of an energy pyramid

• Primary consumer- the second level in an energy pyramid. Eats producers

• Secondary consumers- eat primary consumers

• tertiary consumer- eat secondary consumers

• decomposers- organisms that eat dead organisms, performing the decom

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Trophic LevelTrophic Level

• tertiary consumer- eat secondary consumers

• decomposers- organisms that eat dead organisms, performing the decomposition process

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Food ChainFood Chain

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ProducerProducer ((trapped sunlight & trapped sunlight & stored food)stored food)

11stst order order ConsumeConsumerr

22ndnd Order Order ConsumConsumerer

33rdrd Order Order consumconsumerer

44thth Order Order ConsumConsumerer

Food WebFood Web

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CFUCFU

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Energy Pyramids and Energy Pyramids and GraphsGraphs

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• diagram that shows the energy level each trophic level

• the higher the level, the less energy

Energy PyramidEnergy Pyramid

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CFUCFU

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Energy GraphEnergy Graph

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Tertiary Consumer

Secondary Consumer

Primary Consumer

Producer

CFUCFU

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Tertiary Consumer

Secondary Consumer

Primary Consumer

Producer