Answer:
Travel a mile and I will change, travel a million and I will end as I started. What am I?
I have keys but no locks. I have space but no room. You can enter but can't go outside. What am I?
I am heavy forward but backward I'm not.
I am the kind of soda you must not drink.
I'm blue at day and black at night. I do contain some creatures born and died. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?