Answer:
What goes up but never comes down?
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
It's the only vegetable or fruit that is never sold frozen, canned, processed, cooked, or in any other form but fresh
Different lights do make me strange, thus into different sizes I will change.
What scientists might call your pooch.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?