Sources of water pollution are relatively easy to monitor and regulate while sources of water pollution are difficult to monitor and cleanup. a. domestic; industrialb. primary; tertiary pollutantc. nonpoint; pointd. tertiary pollutant; primary

C. Point, nonpoint

Explanation:

Point source of water pollution originate from a single source and the source of origin can be determined. Industrial and sewage drainage systems are the examples of point source pollutants. The source of pollutant is easy to detect and monitor.

Non-point source of water pollution the source of pollution remains undetermined. The pollutants may enter in water body through multiple sources. Hence, it is difficult to track back the source of single pollutant. Thus non-point source pollution cannot be clean and monitored.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.