Answer:
What is it something that you always have but you always leave behind?
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
What word is a plural, but when you add an "S" to the end, it becomes singular?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
What did the piece of wood say when he saw the screwdriver and screws approaching?