I go to the store and buy a book with my credit card for $14.95. What is the medium of exchange in that situation? SUBJECT- Economics

answer; i believe that the correct answer is (financial and technology);

answer; i believe the answer is (25%)plz check first good luck;

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.