Question

With the help of any two suitable examples explain the effect of anthropogenic actions on organic evolution.

Answer 1

1. Excessive use of insecticide and pesticides resulted in selection of resistant variety of insects and pests in short span of time. The resistant varieties are changed from the non resistant varieties. Changes favored the evolution of resistant insects and pests.
2. Excessive use of antibiotics lead to development of resistant microbes. The resistant variety survived against the antibiotics and the non resistance died against antibiotics. The resistant varieties were selected and evolved into more fatal and resistant kind of microbes.