Answer:
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
I tell people to be careful when handling boxes.
Curtail me thrice I am a youth; behead me once a snake; complete I'm often used in truth when certain steps you'd take.
The dirtier I get, the whiter I am. What am I?
What kind of table can you eat?
Special abilities and brightly colored underwear are all you need to be one of these.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic