Before the Industrial Revolution, pale peppered moths had better camouflage. During the Industrial Revolution, soot pollution favored dark moths, increasing their numbers due to camouflage on darkened trees.
قبل الثورة الصناعية، كانت العث الفلفلي الشاحب أفضل تمويهًا. أثناء الثورة الصناعية، أدى تلوث السخام إلى زيادة أعداد العث الداكن بسبب قدرته على التمويه على الأشجار الملوثة.
| Front | peppered moths example of mutations 4.2.2(h) |
|---|---|
| Back | before IR, most peppered moths pale for camo against light coloured bark, unc survival rates while dark moths easily spotted/eaten, during IR, trees became covered in soot so dark moths now better adapted, so they survived/repro inc their numbers |
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