Which Density-Dependent Process Contributed Most Significantly to the Recovery of the North

question 44

Multiple Choice

Which density-dependent process contributed most significantly to the recovery of the North American monarch butterfly population after the severe winter losses of 2002?

• A) Unusually mild weather in the eastern United States greatly improved juvenile butterfly survival.
• B) Butterfly predators starved when the monarch population dropped, and by the time it had recovered, Monarch population numbers were back up.
• C) Egg production is inversely proportional to density; the surviving monarchs had ample resources and experienced maximal reproduction.
• D) With fewer returning adults, there was less competition for food among the young caterpillars, and their survival rate was unusually high.

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Definitions:

Abraham Maslow

A psychologist known for creating Maslow's hierarchy of needs, a theory of psychological health predicated on fulfilling innate human needs.

Hierarchy of Needs

A theory in psychology proposed by Abraham Maslow that outlines a five-tier model of human needs, from basic physiological needs to self-actualization.

Beck's Theory

A cognitive theory of depression that suggests that negative thinking patterns and beliefs cause and maintain depression.

Negative Automatic Thoughts

Repetitive, brief, spontaneous thoughts often associated with changes in mood and behavior, usually negative and pessimistic in nature.