Try chewing some gum, of your choice,
don't use mouthwash for a bit (the alcohol can make your mouth drier)
reduce your caffeine intake, stay away from caffeinated drinks like coffee, and even soda.
Answer:
Seismology: The branch of science studies of earthquakes and the movement of waves through the earth.
C) Red Blood Cells
Red blood cells contains hemoglobin, which provide oxygen
