Before industrialization in Great Britain, which insects had a higher population?

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Before industrialization in Great Britain, the tree trunks were light-colored due to the abundant growth of white lichens.

The white-winged moth, $B i s t o n$ $b e t u l a r ia$ , was well camouflaged against these light-colored tree trunks and successfully escaped predation by birds.

In contrast, the dark-winged melanic moth, $B i s t o n$ $c a r b o na r ia$ , was easily spotted against the light background and was heavily preyed upon.

As a result, $B i s t o n$ $b e t u l a r ia$ had a significantly higher population before industrialization.

Answer:Biston betularia

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