What is convection within the mantle? how does it affect the motion of plates?

Summary of the impact of the physical environment on settlement patterns and economic activities for ukraine

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.

Why the moon is not visible from earth during the new moon ?