Answer:
I have a straight back and sharp teeth to cut objects.
Tear me off and scratch my head, what once was red is black instead. What am I?
Lovely and round I shine with pale light grown in the darkness a lady's delight.
What has a head but never weeps a bed but never sleeps can run but never walks and banks but no money?
Lovely and round, I shine with pale light, Grown in the darkness, a ladyβs delight.
I go up and never come down no matter how hard you wish. As I get higher, more wrinkles crawl on to the face. What am I?