By what process could you make a 'Tea-Table' into food?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

What demands an answer, but asks no questions

How many times can you subtract the number 5 from 25?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

Who is that with a neck and no head, two arms and no hands? What is it?

Which is the rope you never skip with?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?