Frequencies

The U.S. Pacific Islands region includes more than 2,000 islands spanning millions of square miles of ocean. Rising air and ocean temperatures, shifting rainfall patterns, changing frequencies and intensities of storms and drought, decreasing streamflows, rising sea levels, and changing ocean chemistry will threaten the sustainability of globally important and diverse ecosystems as well as local communities, livelihoods, and cultures.

Source: tatoeba (3651112)

Dogs can hear sounds at much higher frequencies than humans.

Source: tatoeba (3854718)

Giraffes hum at low frequencies.

Source: tatoeba (8547021)

The noise-cancelling is effective at both low and high frequencies.

Source: tatoeba (9476388)