Answer:
What is something that can go up quite easily, but is not as easy to bring back down?
Sends paper without using the post office.
You can carry it everywhere you go, and it does not get heavy. What is it?
What can get you there in eco style, pushed by your legs mile after mile?
What can be measured but has no length, width or height?
What language does a billboard speak?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?