Answer:
What is black when you buy it red when you use it and gray when you throw it away?
What is the word that even in plain sight remains hidden?
I've been around for millions of years, but I am no more than a month old. What am I?
I save lives on the ground and in the air. What am I?
I come with a train and go with a train and the train doesn't need me but can't go without me.
When is it bad luck to see a black cat?
What am I?
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