Question

State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialization period in England.

Answer 1

Industrial melanism was the reason behind the increase in the population of dark-coloured moths along with the loss of lichens during industrialisation in England.
The tree trunks became darker (after industrialisation) with deposits of soot and smoke; hence, the number of dark moths increased as they were not easily visible to their predators while the white-winged ones were easily picked up by the predators. Thus, dark ones were selected by nature (natural selection) and light ones fail to survive.