Dynamic equilibrium in natural systems
Natural systems like the water cycle constantly adjust to stay balanced. When something disturbs the system, it shifts and finds a new balance rather than returning to exactly where it started.
Real World
After the 1980 eruption of Mount St. Helens destroyed surrounding ecosystems, the Toutle River drainage basin gradually re-established a new dynamic equilibrium as vegetation regrew and sediment loads stabilised over the following two decades.
Exam Focus
Emphasise that equilibrium is a shifting balance, not a return to the original state — examiners penalise describing it as static.
Essay Framework
Use PEEL to structure every paragraph. Tap each step for guidance and an example.
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