We find malaria in:
a. arctic regions.
b. tropical regions.
c. northern United States.
d. South Africa.
Question 2
Which of the following medicines was used not by indigenous peoples?
a. Willow bark for pain relief and fever reduction
b. Cinchona tree bark for treating malaria
c. Periwinkle for treating diabetes and now used effectively in treating cancer
d. Dairy products to treat depression