Researchers in Alaska Were Interested in Increasing the Sockeye Salmon

question 24

Multiple Choice

Researchers in Alaska were interested in increasing the sockeye salmon (Oncorhynchus nerka) population in three coastal lakes.To accomplish this,the ponds were treated with fertilizers.As a result,zooplankton biomass increased between 40% and 700% in the three lakes.The substantial growth in zooplankton would suggest that prior to these experiments,these lakes were ________.

• A)eutrophic
• B)stratified
• C)subject to low light levels
• D)oligotrophic

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Definitions:

Production Costs

The total expenses incurred in the manufacturing or production of goods, including labor, materials, and overhead.

Opportunity Cost

The amount of other products that must be forgone or sacrificed to produce a unit of a product.

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A form filed with a government body to report income, expenses, and other relevant financial information, used to assess tax liability.