Explain the increases in the numbers of melanic(dark winged) moths in the urban areas of post-industrialisation period in England.

Explanation

### Step-by-Step Solution:

1. **Understanding Industrial Melanism**:
- Industrial melanism is a phenomenon where darker-colored organisms become more prevalent in industrial areas due to changes in their environment. This adaptation helps them survive better in polluted areas.

2. **Initial Population of Moths**:
- Before industrialization, there were two main color variations of moths: light-colored (or white) and dark-colored (or black). Both variations existed in the population.

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