Question

select any trait(s) that both a shark and a frog share. hair lungs vertebrae notochord rewatch submit

Explanation:

• Hair: Only mammals have hair; sharks (fish) and frogs (amphibians) do not.
• Lungs: Sharks use gills for respiration and lack lungs, while adult frogs have lungs.
• Vertebrae: Both sharks (cartilaginous fish) and frogs (amphibians) are vertebrates, meaning they have a vertebral column (vertebrae).
• Notochord: As chordates, both have a notochord at some stage of their development (sharks retain it, frogs have it in the embryonic stage).

Answer:

• Vertebrae
• Notochord