Answer:
to make you motivated to read more and wants you to think more about the story.
Explanation:
The word <em>that </em>is used as a relative pronoun here, it can be interchanged with the pronoun <em>which, </em>and both are used to connect two parts of a sentence.
Answer:
I am not sure but I think it's answer is signs of change
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)
