Which is the correct shadow of the bird?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

Can you write down eight eights so that they add up to one thousand?

What breaks yet never falls, and what falls yet never breaks?

I’m tall when I’m young, and I’m short when I’m old. What am I?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

What is more useful when it is broken?

What is the riddle which can be asked all day with a different correct answer each time.