Answer: Cell phone apps.
Explanation: The reason this answer is Cell phone apps is that you can't edit pictures with any of the other options. You're welcome.
The medium is pencil/pen and the different values were achieved by shading in darker areas dark and light areas lighter.this makes it challenging because with pencil/pen there can always over go with it
Is this a book your talking about ?
Answer:
that
Explanation:
The purpose of the middle ear is to receive sound vibrations from the outer ear and transfer them to the cochlea of the inner ear.
