It’s that or Fn Im pretty sure
If the sound source is approaching you, the frequency you hear is higher than the real frequency of by the sound. How much higher depends on how fast the source is approaching. If the source's speed is constant, then the frequency you hear is constant ... higher, but not increasing.
Answer:
A. sugar and phosphate groups
C. nitrogenous bases.
Answer:
<h3>Uniform polarization of the heart membranes</h3>
Explanation: