Which of the following is a true statement regarding stimulants?
a. all stimulants are legal and addictive.
b. all stimulants are legal and non-addictive.
c. all stimulants are addictive and can be dangerous.
d. all stimulants are non-addictive, but can be dangerous.

The following statement about pathogens are true except for one, which statement is not true? a. pathogens belong in the human body b. pathogens can cause infectious diseases c. some pathogens can be classified as animals d. pathogens can multiply inside a host organism

Which of the following is not a possible cause of conduction deafness? a) cochlear nerve degeneration b) middle ear infection c) impacted cerumen d) otosclerosis

Which is a physical sign of stress? a: unexplained euphoria b: feelings of invincibility c: inability to sleep d: visual hallucinations