Food chains

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13 Terms

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Food chains

One, linear path of energy & matter

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Food webs

At least 2 different, interconnected food chains

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Owl (in grass → hare → owl)

Secondary consumer

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Owl (in grass → grasshopper → robin → owl)

Tertiary consumer

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Arrows in Food Web

Direction of energy flow

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Trophic Cascade

Removal or addition of an apex predator has a ripple effect down through lower trophic levels

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Bottom-up impact

Impact starting from producers and moving upwards

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Top-down impact

Impact starting from top predators and moving downwards

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Hunting of whales; depletion of the ozone layer; climate change

Ways humans have affected the Antarctic Food Web

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Krill elimination

Consequence on the Antarctic Food Web

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Food Web Construction

Includes various organisms like algae, frog, robin, ant, goldfish, etc.

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Producers

Organisms placed along the bottom of a food chain

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Practice FRQ 1.11

Questions related to describing effects on food webs and identifying consumers