Which term describes water that picks up chemicals and pollutants as it moved over driveways, streets, and lawns? A) septic water
B) runoff water
C) pure water
D) arctic water ​

A or B

Explanation:

a) The term "septic" refers to the anaerobic bacterial environment that develops in the tank that decomposes or mineralizes the waste discharged into the tank. 

b) Runoff is nothing more than water "running off" the land surface. Just as the water you wash your car with runs off down the driveway as you work, the rain that Mother Nature covers the landscape with runs off downhill, too (due to gravity). Runoff is an important component of the natural water cycle.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?