Answer:
Man walks over, man walks under, in times of war he burns asunder. What is it?
Cold head and feet; round as a ball; always turning around myself.
First you see me in the grass dressed in yellow gay; next I am in dainty white, then I fly away. What am I?
My rings are not worth much, but they do tell my age. What am I?
I've been around for millions of years, but I am no more than a month old. What am I?
A little house full of meat, no door to go in and eat.