Wetlands Government agencies carefully monitor water quality and its effect on wetlands (Reference: Environmental Protection Agency Wetland Report EPA 832-R-93-005). Of particular concern is the concentration of nitrogen in water draining from fertilized lands. Too much nitrogent can kill fish and wildlife. Twenty-eight samples of water were taken at random from a lake. The nitrogen concentration (milliagrams of nitrogen per liter of water) was determined for each sample.
a) Identify the variable.
b) is the variable quantitatie or qualitative?
c) What is the implied population?
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