What are our nose and ears made of___________?

Explanation

The external framework of the nose and the outer parts of the ears are supported mainly by cartilage, a flexible connective tissue that is stronger than soft tissue but more flexible than bone. Chitin is found in arthropod exoskeletons, while charcoal is a carbon-rich material and charades is unrelated. Students may choose chitin because its name sounds similar to cartilage, but the two materials occur in different biological structures.