Hormones help maintain homeostasis by

producing white blood cells

exchanging oxygen and carbon dioxide

receiving inforation from the environment and responding to it

sending messages to target cells to control organ functions

sending messages to target cells to control organ functions

Explanation:

producing white blood cells is usally handeled by another organ system

exchanging oxygen and carbon dioxide is the respiratory job

receiving information from the environment and responding to it, is probably the communications of the integumentary system along with the nervous ssytem

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."