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Hipervinculo Biología

High Frequency Hearing Test

There’s a sound that is supposed to annoy teenagers and keep them from loitering in front of shops and stores. It’s called the Mosquito, and it’s supposed to be undetectable by adults. Take some volun ...

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Hipervinculo Biología

High Frequency Hearing Test

There’s a sound that is supposed to annoy teenagers and keep them from loitering in front of shops and stores. It’s called the Mosquito, and it’s supposed to be undetectable by adults. Take some volun ...

Equipo Didactalia