Answer:
It's been around for millions of years, but is never more than a month old. What is it?
What has a big mouth, yet never speaks?
You should keep it as straight as can be, yet very few do. Most of the time it's slightly bent or curved. Your sadness usually causes it to bend further, but don’t bend it for too long or it may never be able to fully straighten out again. What is it?
What is pronounced like one letter, written with three letters. And belongs to all animals?
What has 13 hearts but none beat?
I’m grown from darkness but shine with a pale light. Very round I am and always a lady's delight.