Biology
The C shape of the tracheal cartilages is important because

Provide a surface for the sense of smell
Allows for expansion or contraction of the trachea
All of these
Divide the nasal cavity

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Biology
Which statement best describes Arteries?

They have thick walls and transport blood toward the heart
They have thin walls and transport blood toward the heart
They have thin walls and transport blood away from the heart
They have thick walls and transport blood away from the heart

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