According to the text, hyperventilation is caused by
a. breathing in too much carbon dioxide.
b. getting dizzy.
c. exhaling too much carbon dioxide.
d. all of the above.
e. none of the above.
C
Communication & Mass Media
a. breathing in too much carbon dioxide.
b. getting dizzy.
c. exhaling too much carbon dioxide.
d. all of the above.
e. none of the above.
C