This is an underground level where the ground becomes saturated with water.

Pumping can affect the level of the water table. In an aquifer, the soil and rock is saturated with water.

Explanation:

Aquifer

Explanation:

This aquifer system is an underground level where groundwater is fully saturated

50.23 i believe is correct but don't quote me on that.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.