Answer:
I would say B- it was uncalibrated
Explanation:
he did not take the time to make sure it was calibrated before use
The four bases in DNA are: adenine, thymine, cytosine, guanine.
In RNA, thymine gets replaced by uracil.
Purine is only a name for the two bases guanine and adenine.
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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