science brain Quiz

Question Number 1 What are the structures of the earth? A. pinna,hammer,semicircular B. hammer,anvil,stirrup C. mallius,ear drum,cochlea D. outer ear,middle ear,inner ear Question Number 2 What are the structures of the earth? A. pinna,hammer,semicircular B. hammer,anvil,stirrup C. mallius,ear drum,cochlea D. outer ear,middle ear,inner ear