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D4.2.1—Stability of natural ecosystems

Stable natural ecosystems persist when energy flow, nutrient recycling, biodiversity, and abiotic conditions keep populations within recoverable limits over time.

Syllabus
First assessment 2025
Objective
D4.2.1
Level
HL

Concept essentials

  • Stable ecosystems recover from normal fluctuations because energy flow and nutrient cycling continue.
  • Biodiversity and genetic diversity provide alternative interactions when species or conditions change.
  • Key abiotic factors must remain within tolerance ranges for producers, consumers, and decomposers.
ConceptIB Biology HL