I would say that this is false and while the groundwater table could be right at the level of stream valleys and lakes, on hills provided they are underlain by permeable sediments or rocks, the groundwater table will be much higher than in the valleys as it usually reflects the topography more or less.
"The authors credentials" would be correct
I would say that Mercury show the most signs of volcanic activity.<span />
No, j=7l because when you plug in the numbers, the equation doesn't work. For example:
j=7l j=2, l=14
2=7(14)
2=98
The equation should be l=7j j=2, l=14
14=7(2)
14=14
Hope that helps.