Good Riddles

Question: You feel me but can't touch me, you can hear me but can't see me. I move leaves in trees, you need me to live. At my highest speeds i uproot trees and mow down houses. I cause waves over the ocean. I've been around since the beginning of life. What am I?

Question: You have 20 sick sheep, one dies. How many are left?

Question: What's black, white, and red all over?

Question: What does this code mean?: YY U R YY U B I C U R YY 4 ME

Question: Two brothers are twins. One twin says he is older than the other. The other twin is confused and says: in order for us to be twins we have to born on the same day. How is the one twin older than the other?