Stellar equilibrium is a balance between what two things?
1.outward gravity and inward heat
2.ourward pressure from light and inward pressure from heat
3. outward pressure from hydrogen and inward pressure from helium
4. outward pressure and inward gravity

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.

When you imagine how you'll get from your house to the store, you are a. mental projection b. mental map c. piagetian projection d. cognitive load

Physical features of central america look at the map above which of the following is true