Respuesta :
These sounds can be heard safely by humans without risking permanent hearing loss:
-- rustling leaves . . . . . Yes
-- normal conversation . . . . . Yes
-- vacuum cleaner . . . . . Yes IF it's on the floor and you're standing up.
-- front row at a rock concert . . . . . No
-- jet takeoff . . . . . Yes BUT only if you're at least a mile away from the jet.
Answer:
-- rustling leaves . . . . . Yes
-- normal conversation . . . . . Yes
-- vacuum cleaner . . . . . Yes
-- front row at a rock concert . . . . . No
-- jet takeoff . . . . . No
Explanation: