Answer:
You heard me before, yet you hear me again, then I die. Until you call me again.
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
Creatures of power, creatures of grade, creatures of beauty, creatures of strength. As for their lives, they set everything's pace. For all things must come to live. Under their emerald embraceย Either in their life or in their death.
I have legs but walk not, a strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
Kills the bad ones and the sad ones. Tightens to fit, so one size fits.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?