Answer:
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find.
In the land of the green glass door there are riddles but no answers, sheets but no blankets, and books but no words. Name something found in the land of the green glass door.
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
My first is nothing but a nameอพ my second is more smallอพ my whole is of so little fame it has no name at all.
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
I have feet on my head
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?