Answer:
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
A circle of stones, never in rows. Stacked one on the other, mystery it sows. What is it?
I am the red tongue of the earth, that buries cities.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?