Sounds with frequencies above the range of human hearing are ...

[acc299]

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).

[ally]

Answer to Question 1

c

Answer to Question 2

b

[acc299]

Thanks for the timely response, appreciate it

[nathang24]

Gracias!