Answer:
What word is a plural, but when you add an "S" to the end, it becomes singular?
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
What has 13 hearts but none beat?
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground It holds pale gems of blue.
Large as a mountain, small as a pea, Endlessly swimming in a water-less sea.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.