Answer:
Thousands of these come together to make a digital image. What is it?
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
A home of wood in a wooded place, but built not by hand. High above the earthen ground, it holds its pale blue gems. What is it?
Half-way up the hill, I see you at last, lying beneath me with your sounds and sights. A city in the twilight, dim and vast, with smoking roofs, soft bells, and gleaming lights.
What an fill a room but takes up no space?
I have feet on my head
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?