Sounds with frequencies above the range of human hearing are referred to as
a. fundamental frequencies.
b. pure tones.
c. ultrasound.
d. infrasound.
Question 2
High levels of leptin stimulate the release of
a. neuropeptide Y (NPY).
b. alpha melanocyte stimulating hormone (MSH).
c. cholecystokinin.
d. agouti-related protein (AgRP).