I shave every day, but my beard stays the same. What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Take one out and scratch my head, I am now black but once was red. What am I?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

A father's child, a mother's child, yet no one's son.

Who am I?