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8.12A Disruption to Food Chains and Food Webs

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Last updated about 6 hours ago
10 questions
Note from the author:
diagram the flow of energy within trophic levels and describe how the available energy decreases in successive trophic levels in energy pyramids;
diagram the flow of energy within trophic levels and describe how the available energy decreases in successive trophic levels in energy pyramids;

Use the following interactive website to practice identifying the pieces of a food chain.

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Question 1
1.

Which level of the energy pyramid contains the most contaminants due to biomagnification?

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Question 2
2.

Which organisms in this food chain would initially increase due to fertilizer runoff?

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Question 3
3.

Name an organism that would decrease if insecticides were introduced.

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Question 4
4.

Name an organism that would increase if insecticides were introduced.

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Question 5
5.

What would happen to the population of the hawks if garter snakes increased?

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Question 6
6.

What population would drastically decrease if garter snakes increased?

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Question 8
8.

Which primary consumer would likely survive after a brush fire that destroyed low lying plants.

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Question 9
9.

What do the kangaroo rat, rabbit, and grasshopper compete for?

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Question 10
10.

Which trophic level would be affected first if volcanic ash blocked out the sun?

Question 7
7.

Select the six organisms that would immediately face a reduction of energy if the grasshopper population became eliminated.
grass
rabbit
toad
garter snake
spider
preying mantis
sparrow
mouse
hawk
hognose snake