The evolutionary story of moths in England during industrialisation reveals, that ' evolution is apparently reversible '. Clarify this statement.

Explanation

**Step-by-Step Text Solution:**

1. **Introduction to the Moths of England**: The evolutionary story of moths in England, specifically the species *Biston betularia*, serves as a classic example of natural selection and evolution in response to environmental changes.

2. **Pre-Industrialization Scenario**: Before the onset of industrialization, the environment was relatively clean, and tree barks were covered with light-colored lichens. This light background provided camouflage for the light-colored moths, allowing them to evade predation by birds. Consequently, the light moths thrived, while the dark moths were more easily spotted and consumed by predators.

3. **Impact of Industrialization**: With industrialization came increased pollution, particularly from soot and smoke. This pollution led to the death of lichens and darkened the tree barks. As a result, the environment changed dramatically, favoring the dark-colored moths. The dark moths became less visible against the now-darkened tree barks, allowing them to escape predation, while the light moths became more vulnerable and were targeted by birds.

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