Sink or swim: population pressures threaten the nation's water.
D000383:Agriculture; D000569:Americas; D003247:Conservation of Natural Resources; D019049:Developed Countries; D004467:Economics; D004777:Environment; D005069:Evaluation Studies as Topic; D009656:North America; D011157:Population Dynamics; D014481:United States; D014881:Water Supply
Agriculture; Americas; Carrying Capacity; Critique; Developed Countries; Economic Factors; Environment; Macroeconomic Factors; Natural Resources; North America; Northern America; Population Pressure; United States; Water Supply