Earthquakes, volcanoes, and other natural disasters occur because of the movement of the oceanic and continental plates. What causes these plates to move? A the flow of the hot material in the middle mantle that causes convection currents the movement of the hot solid metals in the inner core the flow of the liquid metals in the outer core D the breaking up of the crust

The answer to your question is A.

Answertropical depression;

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.