Upon viewing video of the Boston Marathon bombing, experts ruled out an industrial or military accidentThey made conclusions that the bomb was most likely made from acetone peroxide (available commercially)What detail from the video led them to this conclusion?

breathe deeply from your lower lungs - imagine a rubber ring around your waist (your diaphragm)

breathe in and try to push the ring outwards.

breathe in through your nose and out through your nose and mouth.

explanation:

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