Benefits & problems of faulting & folding are basically the same because they all result from crustal disturbances.
Try to put examples everywhere possible
*Disadvantage*
Plenty (I think you can up with some)
Split them (environmental & human impacts)
*_Environmental_*
Loss of some biodiversity
Disrupts the natural ecosystem
Disrupts the flow of rivers (can dry up productive lands)
#Crustal snapping(rebounding) can generate earthquakes e.g 2006 Mozambican earthquake where the Rift valley snapped extending south
Humans
(I think You can come up)
loss of lives etc
*Benefits*
# Crustal movement can reveal mineral seems on the ground e.g Great Dyke
# Can create(open up) lakes e.g African Rift Valley lakes such as Lake Malawi
# Can create tourist sites as spectacular sceneries can be formed e.g Isle of Wright monocline in UK
#Fissures(cracks) opened up by faults can eject steam for geothermal power
# Can channel water to dried up places