Now hear this.Unless the writer is deliberately implying an archaic theory of evolution in "Can you hear me now? Frogs in roaring ROARING. A disease among horses occasioned by the circumstance of the neck of the windpipe being too narrow for accelerated respiration; the disorder is frequently produced by sore throat or other topical inflammation. 2. streams use ultrasonic ultrasonic /ul·tra·son·ic/ (-son´ik) beyond the upper limit of perception by the human ear; relating to sound waves having a frequency of more than 20,000 Hz. ul·tra·son·ic adj. 1. calls" (SN: 3/18/06 p. 165), the statement "Ultrasonic perception may have developed as the frogs (Amolops tormotus Also known as the concave-eared torrent frog, Amolops tormotus is the first frog (and the first non-mammalian vertebrate) demonstrated to both produce and perceive ultrasonic frequencies. ) struggled to hear each other ..." cannot be true. That's not how natural selection works. JOHN WYMORE, ALBUQUERQUE Albuquerque (ăl`bəkûr'kē), city (1990 pop. 384,736), seat of Bernalillo co., W central N.Mex., on the upper Rio Grande; inc. 1890. , N.M. Frogs that could hear frequencies higher than the water's roar might have had an advantage. "Struggled to hear each other" shouldn't be interpreted as "struggled to evolve." Indeed, evolution doesn't work that way.--S. MILIUS |
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