Answer:
Give it food and it will live, give it water and it will die.
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
When is it bad luck to see a black cat?