Examples, statistics, and testimony? NOT 100% SURE
Answer:
To provide a form of passive ventilation inside... if its wrong I’m sorry:)
To find the name of a key signature with sharps, look at the sharp farthest to the right. The key signature is the note a half step above that last sharp. Key signatures can specify major or minor keys. To determine the name of a minor key, find the name of the key in major and then count backwards three half steps.
Make sure to change up the words a little so you don’t get plagiarized