Plzzz ! would you expect to see a folded mountain range at a mid-ocean ridge? explain your answer.

Plzz on what physical process is responsible for the creation of volcanoes, earthquakes and ocean trenches at the plate margins?

Because its government strictly controls its economy, north korea has a economy. a. command b. mixed c. traditional d. free market

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.