Tertiary pollution occurs from damaging emissions being released into the atmosphere. This type of pollution can effect water supplies so tertiary water treatments are often used.
Industries and various means of transport give rise to problems of pollution of air, water and noise.
Tertiary - Third So the tertiary comes third.
tertiary
Tertiary activities
Tertiary
Coal of Tertiary Age
tertiary
primary
Tertiary
there are 6 tertiary colors
Examples of tertiary activities?
nope