The lithosphere is made up of pieces of tectonic plates. These plates are constantly changing and move towards the mantle. Non-stop movement of tectonic plates causes stress on the earth's outermost layer i.e,the crust. When these stresses extends it leads to cause cracks called faults.
B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how
