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.

Explain the increases in the numbers of melanic(dark winged) moths in the urban areas of post-industrialisation period in England.

Apperance of dark-coloured peppered moths among the light-coloured ones as a result of increased industrial pollution is an example of

In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of

Assertion (A):Natality contributes to the increase in population density. Reason (R): Natality refers to the number of births during a given period in the population which is.