Usually they are about 15 in at a wedding.
Answer:
1. sound waves
2. eardrum vibrates
3. the bones in the middle ear amplify
4. the hair cells move up and down
An outline is being defined as a 2 dimensional shape which is the answer. The outline also known as the list being arrange to portray the hierarchical relationship and known as a tree structure. It is used in order to portray the main points or a topic in a subject.
