Mention any two examples of evolution by anthropogenic action.

Explanation

(a) Industrial melanism: During post industrialisation period, the tree trunks become dark due to industrial smoke and soot. Under this condition the white-winged moth did not survive due to predators and dark winged or melanic moth survived. But before industrialisation thick growth of almost white coloured lichens covered the trees, in that background the white winged moth survived but the dark coloured moth were picked out by predators.
(b) Excess use of herbicides, pesticides etc. has only resulted in selection of resistant varieties in a much lesser time scale.