Answer:
B tectonic plates
Explanation:
I choose this because when the plates move that is how mountains, valleys and volcanoes are made. It is because of the shift.
<span>Stage 4 demographic means that the population is stabilized by a low rate of births and deaths. Out of the 4 options it would be most likely that western Europe's population would stabilize this way since it is one of the oldest and advanced, so rapid growth would be low and death rates reduced by advances in medicine.</span>
C is the correct anwser because it proves how we are very dependent on chemicals.
You need to ask specific questions and people will answer