Answer:
What invention lets you look right through a wall?
A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I?
Whoever made me doesn't want me. Whoever bought me doesn't need me. Whoever uses me doesn't know me. What am I?
My seas have no water, my mountains have no rock, and my land has no grass. What am I?
I move without wings between silken strings. I leave as you find my substance behind
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?