The answer is : IT CREATES A MOOD OF ANXIETY AND UNCERTAINTY
D. Mary’s life did not turn out well (110% the right answer)
They change shape due to a number of reasons.
The easiest reason to understand why they change is that they erode.
The coasts around the the world erode due to waves hitting cliffs, the wind batting against the coasts etc. Over a long period of time we can see that they change in shape.
(sorry I don't know why they move)
I am not very sure but I would probably use on the other hand or therefore.
Do you mean cause? How are the words cause ad brought together alike? Is that what you are asking?