What Am I Riddles

Question: Weight in my stomach,trees on my back,nails in my ribs,it's feet I lack.What am I?

Question: With one you can't count past six,
nor can the gap between v and x be fixed.
You can read all of these lines,
but can't say what solves me.

What am I?

Question: What sport starts with a T, has four letters, and is played around the world?

Question: 100 feet in the air, yet its back is on the ground.

What is it?

Question: What is bought by the yard by is worn by the foot?