Answer:
I am what remains when nothing is left.What am I?
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
A girl was ten on her last birthday, and will be twelve on her next birthday. How is this possible?
A man went to a place on thursday on his horse, he came back 3 days later on thursday how is this possible?
I am a span of time you can always see through I am also the timepiece with the most pieces. What am I?
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.