Answer:
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
How far will a blind dog walk into a forest?
I tremble at each breath of air, and yet can heaviest burdens bear.
What word in the English language does the following: the first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?
It is the electronic version of junk mail or a salty meat in a can.
I am owned by Old McDonald.