A normal adult male is instructed to reduce his vocal intens…
A normal adult male is instructed to reduce his vocal intensity from 70 dB SPL to 40 dB SPL. Which TWO of the following changes are most likely to occur at the laryngeal level as a result of this decrease in intensity? (Select up to two options; partial credit will be awarded for correct selections.)
Read DetailsIn a population of birds, there is variation in beak size. B…
In a population of birds, there is variation in beak size. Birds with small beaks are better at eating tiny seeds, while birds with large beaks are better at cracking hard, large seeds. Birds with medium-sized beaks, however, struggle to eat either type of seed effectively. Over time, the population begins to show an increase in the number of birds with either small or large beaks, while birds with medium-sized beaks become less common. Which type of selection is being displayed in this scenario?
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