Question

What are ossicles, and and what is their job?

Answer 1

The ossicles are three bones in either middle ear that are among the smallest bones in the human body. They serve to transmit sounds from the air to the fluid-filled

Answer 2

skeletal unit that gives Echinoderms their characteristic spiny skin

Step-by-step explanation:

Although Echinoderms lack backbones, they have a protective calcitic endoskeleton.