Easy Riddles and Answers

Question: Why are some fish at the bottom of the ocean?

Question: What has legs but doesn't walk?

Question: Which kind of book can move by itself?

Question: What four related words are merged together: TOUS RGQC URRO IAAN RLGS EEET ENE

Question: I am two five letter names 500 is at the start, 10 is in my heart. In the middle of that is 1, Near the end is none. At the end is 14, Yet that is not all that has been seen. It's a word that rhymes with liver, Yes, to the left of that is river.