Question

question 20(multiple choice worth 3 points)
(02.04 hc)
the peppered moth population in a locality has light and the dark moth varieties. what is the likely cause of a relatively lower population of dark moth variety in the locality?
pollution - free environment increasing lichen growth
highly polluted environment increasing lichen growth
pollution - free environment covering the barks with black soot
highly polluted environment covering the bark with black soot

Explanation:

In a pollution - free environment, lichen grows on tree barks. The light - colored moths are camouflaged better on lichen - covered barks. In a polluted environment, tree barks get covered with black soot, and dark - colored moths are camouflaged better. If there is a relatively lower population of dark moth variety, it is likely because the environment is pollution - free (which increases lichen growth), making light - colored moths more camouflaged and thus more likely to survive and reproduce compared to dark - colored moths.

Answer:

Pollution - free environment increasing lichen growth