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

question 5

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 aquatic animals is high.
• C) Nitrogen and phosphorous levels are usually high.
• D) Photosynthetic activities are altered.
• E) Algal blooms are common.

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Definitions:

Precipitation

Any form of water, liquid or solid, that falls from the atmosphere and reaches the ground.

Biotic Factor

A living component of an ecosystem, such as plants, animals, and microorganisms, that affects and interacts with other organisms in their environment.

Bacteria

Microscopic single-celled organisms that inhabit virtually all environments on Earth, including soil, water, and living organisms, playing critical roles in various ecosystems.

Aquatic Life Zone

Areas in water bodies, such as lakes, rivers, and oceans, that support life, including various plants, animals, and microorganisms.