Biology, 15.07.2019 04:30 officialalex6330
Astudent measures the range of sound frequencies that the human ear can hear by playing sounds for volunteers between 10 and 30,000 hertz and asking them to raise their hand if they were able to hear it. what type of variable is the independent variable in this experiment?
Answers: 1
Biology, 22.06.2019 19:10
which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)
Answers: 1
Astudent measures the range of sound frequencies that the human ear can hear by playing sounds for v...
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