Here you have some questions about the ear.
To solve them you can follow the links. And then record the answers here. 
1.- What are the three main causes of hearing loss?
Go to that web page and try to find the answer
2.- What happen when you "pop" your ears as you change altitude (going up a mountain or in an airplane)?
You can visit this web page to find the answer
3.- The eardrum has what other name?
You can find the name in this page
4.- What is the animal that has the best sense of hearing?
Try to find the information here
5.- Who has more sensitive ears adults or babies?
6.- What’s the smallest bone in the human body?