Industrial melanism is an example of:
1. | Natural selection | 2. | Mutation |
3. | Racial difference | 4. | Predation |
Industrial melanism is an example of:
1. | Drug resistance |
2. | Darkening of the skin due to smoke from industries |
3. | Protective resemblance with the surroundings |
4. | Defensive adaptation of skin against ultraviolet radiations |