Explain why urban explosion is a concern in regard to environmental science. (site 1)

There are several factors that affect urban growth, it can contribute to the rate of poverty, decrease in resources and involves health risk. Since environmental science explains that sufficient supply should be available to any forms of demand, it posts high concern. Change in our environment is expected. Therefore, study and contingency planning should be properly executed.

The correct answer is a)  a resource with a limited supply; it will run out.