An Ecologist's Goal Is to Maintain the Health of an Aquatic

question 161

Multiple Choice

An ecologist's goal is to maintain the health of an aquatic ecosystem by identifying potentially damaging factors before they cause problems.In her research on a pristine lake ecosystem, she would be most likely to study which topic in the natural setting rather than in a laboratory?

• A) The effect of a chemical pollutant on a fish species
• B) The short-term effects of genetic manipulation of algal photosynthesis
• C) The changing community structure of the lake over time
• D) The effects of introducing a new top predator into the lake
• E) The effect of algal blooms caused by excess nutrients on lake biochemistry

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Definitions:

Ego

A psychoanalytic term referring to the part of the personality that mediates between the demands of the id, superego, and reality.

Needs

Essential or basic requirements necessary for people to live and function properly, such as food, water, and shelter.

Construct

An idea or theory containing various conceptual elements, typically considered to be subjective and not based on empirical evidence.

Directs Behavior

Directing behavior refers to the ways in which cognitive processes, environmental cues, and personal goals influence an individual's actions and decision-making.