It was the plants around us. They give us air to breath. It was to help us breath so we can live.
The correct answer is B. Pinna because auris externa is the external portion of the ear, which is called auricle ( also known as pinna ).
* Hopefully this helps:) Mark me the brainliest:)!!
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He was the first to provide an explanation of evolution supported by evidence.
I would say the Geosphere, as Biosphere, Hydrosphere, and Atmosphere don't quite fit Volcanology.