Use the Incomplete Diagram Below, Illustrating Some of the Steps

question 18

Multiple Choice

Use the incomplete diagram below, illustrating some of the steps involved in eutrophication to answer the following questions.
Figure 55.3
-What would be a likely entry for box B?

• A)decomposer population carries on cellular respiration and uses up oxygen
• B)plants no longer producing oxygen
• C)warm water holding less oxygen than cold water
• D)fish that cannot acclimate to low oxygen levels
• E)carbon dioxide building up from cellular respiration by decomposers

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Definitions:

Joint Production Costs

Costs incurred in the process where two or more products are produced together and the costs cannot be readily assigned to individual products.

Contribution Margin

A measure of profitability calculated as sales revenue minus variable costs; used to evaluate a product's contribution to covering fixed costs.

Machine Hour

A measure of production time or operation, calculated as the total hours a machine is run in the production process.

Net Realisable Value Method

A valuation method where the estimated selling price of goods is reduced by the completion and disposal costs.