What Am I Riddles

Question: You answer me, but I ask you nothing. What am I?

Question: My thickness is no more than a few centimeters, yet my depth can span to infinity. Although mundane, I intimidate most animals. When in my presence, you will inevitably follow me. What am I?

Question: Whoever makes me can hear me, but nobody else can.

What am I?

Question: Look at my face, I am somebody. look at my back, i am nobody. What am I?

Question: What type of cheese is made backwards?