Discover Questions

How can a mineral deposit (not considered as an ore) become reclassified as an ore? Use f(x) = 3x − 4 and g(x) = 5 − x^2 to evaluate the expression:
(f ○ g)(x)=
(g ○ f)(x)=? How do geologists determine the relative ages of different rocks? If an alien civilization had visited thousands of years ago and interacted with our primitive ancestors, what clues would we find today? When did the first UFO abduction take place?