Water in an old building tested recently, showed high copper and iron content, and low ph levels. a water reading taken 20 years before, showed low ph levels and only minimal traces of copper and iron. if none of the new buildings on the same street showed signs of metallic contaminants, but all reported lower than normal ph readings, how might these readings be explained? (where could the metal come from? )

Want free points and brainliest? answer this drivers ed question correctly and you shall receive : ) in which of the following situations is it legal to pass? a. the vehicle you want to pass is driving at or above the speed limit in front of you. b. you must cross a center line that's solid on your side and broken on the opposite side. c. you are in the middle of crossing a bridge that only has one lane each direction. d. you are on a straight road and can pass the car ahead under the speed limit.

17. a graduated standard used to evaluate student achievement is called a: a. rubric b. norm-referenced test c. criterion-referenced test d. multiple-choice question e. guessing penalty

Why is wilhem wundt considered the "father of psychology"?