Eutrophic Lakes Typically Support Ten Times the Microbial Concentrations of an Oligotrophic

question 21

Multiple Choice

Eutrophic lakes typically support ten times the microbial concentrations of an oligotrophic lake. Which of the following statements is NOT true of eutrophic lakes?

• A) Biochemical oxygen demand is high.
• B) Population of consumer aquatic animals is high.
• C) Nitrogen and phosphorous levels are usually high.
• D) Photosynthetic activities are altered.
• E) Algal bloom is a common characteristic.

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Definitions:

Dependent Variable

In research, it’s the outcome or factor that researchers are interested in understanding or predicting, which changes in response to the independent variable.

Hawthorne Effect

The alteration of behavior by the subjects of a study due to their awareness of being observed.

Primary Data

Data that is collected directly by the researcher specifically for the purpose of their study, without going through any intermediary sources.

Sociological Survey

A research method used to collect data from participants through questionnaires or interviews to study human behaviors and attitudes.