How is a waterfall formed?​

What conclusión can be drawn about the middle east

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.

Suppose you had to resolve the problems believed to be caused by distance decay in russia. what would you suggest?