The answer is to test a piece of untreated and treated under same conditions!
Answer: Either A or D
Geologists and paleontologists constructed the geologic table based on the relative positions of different strata and fossils, and estimated the time scales based on studying rates of various kinds of weathering, erosion, sedimentation, and lithification.
Answer:
Pb(NO3)2 + KI = KNO3 + PbI2