MRI scans require an injection of a radioactive material into the patient's blood

Changing the shape of the lens to focus on objects near or far is called

A) convergance B) accommodation C) constriction D) dilation

Uri is walking home alone on a dark night. He hears a stick breaking and immediately turns to his right to see what made the noise. What cue could Uri have used to tell which direction the sound came from?

A) the location along the basilar membrane stimulated by the sound B) the slight time difference between when the sound reached each ear C) the overall loudness of the sound D) the frequency of the sound