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What feature of cell theory is best demonstrated in the image

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm