las siguientes letras nos indican el tipo de vegetación en un tipo de clima y escribe a qué tipo de vegetación hace referencia W S T F B​

Which of there factors contributed most to us westward expansion in the second half of the nineteenth century?

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.

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false