Menge and Colleagues Performed Experiments in Which They Exposed Some

question 14

Multiple Choice

Menge and colleagues performed experiments in which they exposed some populations of mussels to sea stars and excluded sea stars from other mussel populations. Suppose that the sea star population consists of 20 individuals and the two populations of mussels are of the same size prior to the mussel treatment. In the treatment condition, there are 500 individuals without sea stars and 100 individuals with sea stars. What is the per capita interaction strength of sea stars on mussels?

• A) ln (0.2/20)
• B) ln (0.5/20)
• C) ln (100/20)
• D) ln (500/100)

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Definitions:

Market Price

The current price at which an asset or service can be bought or sold in a given market.

Shut Down

A short-term decision by a firm to cease production due to market conditions, not covering variable costs in the short run.

Average Variable Cost

The total variable costs divided by the quantity of output produced.

Perfectly Competitive

A market structure characterized by many buyers and sellers, identical products, and free entry and exit, leading to price determination by supply and demand.