Answer:
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
small land in water.
I have three feet but no arms or legs
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
I am a fruit. If you take away the first letter of my name I become a crime. What am I?
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?