Plate tectonics are important to geoloigists because they explain how the continents make up the earths crust.
Answer:
Local and unique ways of being are increasingly replaced by more homogenized and standard ways of being that are shared across cultures. The world seems smaller because with all of this global integration there is a sameness or familiarity no matter where you are.
The migration of the Moon away from the Earth is mainly due to the action of the Earth's tides. The Moon is kept in orbit by the gravitational force that the Earth exerts on it, but the Moon also exerts a gravitational force on our planet and this causes the movement of the Earth's oceans to form a tidal bulge.