Answer:
By definition ( scientific dictionary )
Induced Variability :This type of variability is in marked contrast to natural. It occurs because we have assigned our population or sample to two or more treatment groups and then observe the variability between the groups The results are manipulated by outside factors controlled by the one experimenting.can be controlled
Natural Variability :Variability that accounts for the fact that members of a populations are simply different, Naturally everything is different even in te smallest tings.