a)magnetic effect b)Lighting effect c)Heating effect
Short answer, no. The bones of whatever creatures died had to be preserved very quickly, usually by being covered by a landslide or such, or in tar pits, to prevent decomposition. Unless the bones are preserved, they'll just rot away.
some fossils can be very far underground depending on when the species died, there could be fossils everywhere but inaccessible, most fossils are accessible because we hae found tons already, if scientists can dig up fossils that are millions of years old, they can certainly dig up more, they just don't know where to look
a) seperating metal scraps from waste b)no idea c) production of energy
I can't say yes or no. But I'll bet that there are a great many that would be interesting if we knew where to look and they were easy to find. Considering what has been found to date I'm sure that there are.
