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

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

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

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

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

Who has married many women but was never married?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?