Answer:
Excessive size
Excessive size both in population and geographical area
Where the economic base of the cities is inadequate to cope with problems created by excessive size
Over Crowding
Too many people occupying too little space and competing for too few services and jobs
Urban Expansion and Loss of Agriculture land
Tremendous amount of land being gobbled up by sprawl of cites, especially giant conurbation.
The loss of agriculture land to urban/industrial sprawl is of grave concern.
Once loss this prime land cannot be replaced.
Explanation: