Answer:
Its days are numbered.
I'm often served as a "rack of ..." I'm often smoked or grilled, with bones in, and slathered in BBQ sauce.
Lovely and round, I shine with pale light, Grown in the darkness, a lady’s delight.
What can be seen but not touched?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
What language does a billboard speak?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?