Answer:
If you lose me, you may cause people around you to lose me too. What am I?
My geometry is lost in the night to be found in daylight's break. The rigors of time have torn me to shreds, yet I stand to protect that which lies within. What am I?
I am always running but I never get tired or hot. What am I?
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
Can not be bought, Can not be sold, Even if it's made of gold. What is it?
When is it bad luck to see a black cat?