kaylajohnson7556 kaylajohnson7556
  • 02-03-2018
  • Biology
contestada

The walls of the trachea are made up of rings of _______________ that strengthen the trachea and keep it open.

Respuesta :

Ivangel123 Ivangel123
  • 02-03-2018
Cartilage is the answer.
Answer Link

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