It is a that is what I think
That the pace of everyday life is such that is prevents individuals from perceiving that which the society deemed as unimportant.
Geothermal energy for heating. Solar power, or HydroElectric energy. The most efficient/Ideal one would HydroElectric energy. The reason why I say this is because HydroElectric energy does not pollute the environment, or produce harmful fumes. It also produces a lot of energy to power multiple homes.
Trace fossils represent things that were alive, it could be footprints, or bones.
I think this option fits best:
"<span>Evidence that animals were at some time in the area."</span>