How much water must be diluted with alcohol before the alcohol loses its flammability? (excuse the wrong category I accidentally selected)

What role did the waterways of europe play in development of europe's economy

Which statements about wells are true? check all that apply. a) wells bring groundwater from the unsaturated zone to the surface of the water. b) wells need to be drilled below the water table. c) if water is pumped from a well too quicky, the well may run dry. d) water from wells is generally not safe to drink. e) water gushes from artesian wells due to pressure.

Which season has the least amount of rain in the northern latitudes