What word begins and ends with an E, but has only one letter?

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

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

How many sides does a circle have?

If eleven plus two equals one, what does nine plus five equal?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Give it food and it will live; give it water and it will die.

I know a nine-letter word having only one vowel.
Do you ?

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?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?