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nmdcat.online July 14, 2026

How does the concept of “the struggle for existence” relate to carrying capacity (K) in ecology?

A. The struggle for existence is absent when a population exceeds its carrying capacity.
B. The struggle for existence intensifies as a population approaches and exceeds its environmental carrying capacity because resources become scarce.
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C. Carrying capacity is determined entirely by the mutation rate of the species.
D. The struggle for existence occurs only in populations that are far below their carrying capacity.

📝 Explanation

As a population grows toward its carrying capacity, resources (food, shelter, water) become limiting, which intensifies competition and the struggle for survival.

📖 Additional Information

  • The struggle for existence is absent when a population exceeds its carrying capacity.
  • The struggle for existence intensifies as a population approaches and exceeds its environmental carrying capacity because resources become scarce.
  • Carrying capacity is determined entirely by the mutation rate of the species.
  • The struggle for existence occurs only in populations that are far below their carrying capacity.

As a population grows toward its carrying capacity, resources (food, shelter, water) become limiting, which intensifies competition and the struggle for survival.

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