The answer is D. Walls, floor and ceiling.
Answer:
The camera obscura later became a popular tool during the Middle Ages and the Renaissance, particularly after inventors began using biconvex lenses to brighten its images. Astronomers used it to protect their eyes while observing the sun and solar eclipses, and artists employed it as an aid in portraiture and landscape painting.
Explanation:
Answer:
Producers will compose beats as background music independent of the vocal.
(that's all I got.)
Answer:
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