Answer:
External auditory meatus
Explanation:
The pinna leads into the external auditory meatus which is a tube that directs sound waves to the tympanic membrane. The tube is lined with hairs which trap solid particles that may enter the ear. It is also lined by wax secreting cells whose function is to secrete wax that traps dust and prevents entry of solid particles. The wax also maintains the flexibility of the eardrum.
An embryonic stem cell is the first cell in the embryo, this is what creates a human and helps more cells to form.
D. The heat is there via convection from the sun
Answer:
More acidic and carbon dioxide
Explanation:
Cause I took the test
