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)
Honestly..... You didn't do anything wrong because it is a communication barrier. And you both didn't understand each other. Hope this helps you out. Good luck!
Answer:
No space between book,chair. Two apostrophes in the word didn''t near the end. Space in the apostrophes and no comma before them " why is everything in the house alive?".
The word with a negative connotation would be “chick”.
