Unit Test — Unit test Answers
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Which type of pollution includes CFCs and smog?
A
landB
airC
waterD
volcanic22
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Which is a renewable resource?
A
petroleumB
woodC
ironD
coal23
Which is a sustainable practice?
A
operating wind farmsB
clear cuttingC
flood irrigationD
overfishing24
Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?
A
Plants are not infinite in number.B
Producers are limited by consumers.C
Carnivores are too large to be eaten.D
Energy is lost at each trophic level.25
What might happen to the organisms in the food web below if the number of phytoplankton and vegetation drastically decreased?
A
The small fish and wading birds would be affected.B
Only the small fish would be affected.C
The small fish, bivalves, and invertebrates would be affected.D
The entire food web would be affected.Did you find these answers helpful?
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