Author Question: A chemical substance that can affect your health, your feelings, or your behavior is known as a(n) ... (Read 66 times)

Haya94 · **on:** Jul 11, 2018

A chemical substance that can affect your health, your feelings, or your behavior is known as a(n) __________.
Fill in the blank(s) with correct word

Question 2

Even while we sleep, thoughts in the unconscious mind can produce muscle tension.
a. True
b. False
Indicate whether the statement is true or false