The most controversial components of coffee are
a. caffeine and theobromine.
b. acids and aldehydes.
c. polyphenols.
d. volatile compounds.
e. methylene chloride and caffeine.
f. caffeine and other volatile compounds.
Question 2
Approximately _____ percent of the coffee consumed in the United States is decaffeinated.
a. 5 to 10
b. 10 to 20
c. 20 to 25
d. 25 to 40