what is true for rift valleys? a. gravity is weaker over these areas. b. they result in upwelling convection currents. c. they split oceanic ridges d fresh partly melted rock rises in the middle and moves away from the valley e. all the abobe or f. none

which of the following is NOT part of the evidence for geologic change? a. folds, b. fumarole c. fault d . fossils

if the assumption on which hypothesis is based in incorrect, can the conclusions be correct? a. yes b. no

which of the following minerals is NOT found in granite? a. quartz b. mica c. clay or d feldspar