Answer:
a plate is subducted under when a oceanic plate merges or moves to a continental plate causing subduction.
C. Transportation limits product availability
Answer: Option (C)
Explanation: Hydro-fracking is a process by which the natural gas can be taken out by drilling down into the earth before injecting a high pressure fluid or a water-mixture. It is an efficient and a cheaper method and but sometimes oil seeps through the fractures, which could probably harm the environment.
Thus the correct answer is option (C).
It was the continental drift.
Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of "continental drift."
