The water treatment that helps reduce tooth decay is

A. disinfection.
B. chlorination.
C. filtration.
D. fluoridation.


Answer: D

Health & Biomechanics

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The air cells of the lungs are the:

A) cilia. B) pleura. C) alveoli. D) bronchi.

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Identify the suffix for condition

A. -pathy B. -ion C. -sis D. -osis

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Which condition is an autoimmune disorder characterized by a red, scaly rash on the face and upper trunk??

A) ?eczema B) ?systemic lupus erythematosus C) ?psoriasis D) ?rosacea

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When lying down, what is a safe guideline to prevent posture, back, and neck problems?

A. Do not lie on your back unless you have a thick head pillow. B. Lie on your side with the legs straight. C. Place a pillow between your knees when lying on your side. D. Lie on your abdomen.

Health & Biomechanics