Answer:
The older they are the less wrinkles they have.
Be sure to shout for its answers are weak, but there is no language it cannot speak.
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
Iron roof, glass walls, burns and burns and never falls.
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
I am your mother's brother's only brother in law. Who am I?