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

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

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

You see me once in June, twice in November, and not at all in May. What am I?

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 finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What am I?