Answer:
I help engines spin and pants stay up.
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain; doing no harm, and feeling no pain. What am I?
Dead on the field lie ten soldiers in white killed by one blade yet there was no fight. What are they?
I keep growing and am practically indestructible. I get eaten, but always come back. I survive cold and lie everywhere. You see me everyday. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.