Water wells are important for
A) reaching groundwater in the water table
B) storing groundwater for future use
C) turning non-potable water into potable water
D) melting freshwater trapped in glaciers
E) purifying water
pls help!!!

Non renewable resources like petroleum eventually

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

Which of these are physical changes in matter? check all that apply boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese