Which of the following techniques and/or instruments are used to monitor volcano deformation?
[note: there may be more than 1 correct answer. choose all correct answers for full credit. there is a penalty for selecting an incorrect answer.]

a) direct measurement between 2 points on the volcano

b) insar

c) seismometer

d) cospec

e) ftir

f) acoustic flow meter

g) tiltmeters

h) gps

i picked e, g, and h and got 0.75/1 on the i don't know which is wrong or right, or whether i missed one or not.

Cause of he different elevations  hope this ?

Separated the laws of islam from the laws of the nationreplaced the old muslim calender with the gregorian calender  abolished religious courts and created a new legal system based on european law as opposed to the previous system based on the islamic law code granted women the right to vote and to hold public office launched government-funded programs to industrialize turkey and to spur the economic growth attempted to modernize turkey by banning the fez which was of greek origin marriage was considered civil and not religious and polygamy was abolished women were given the right to vote in all elections 

Tropic of cancer and tropic of capricorn