Answer:
I have a straight back and sharp teeth to cut objects.
I am in the past never in the future. I don't exist but have existed. I saw what you saw and that is what I will ever see.
I am always around you but often forgotten. I am pure and clean most of the time, but occasionally rotten. What am I?
When it comes to me you go on red and stop on green.
I am a fruit with seed on the outside.
A little house full of meat, no door to go in and eat.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic