Which substance can cause damage in the form of atmospheric gas, dry particles, and acid?
carbon monoxide
carbon dioxide
ozone
sulfur dioxide

Articular cartilage to shocks and prevents friction between parts.

Which statement is true about common childhood infectious disease? a. children should always be given antibiotics to treat an infectious illness. b. frequency of infectious illnesses usually increases as children grow older. c. having a minor infectious illness weakens a child's immune system. d. infectious illnesses are usually mild and require no medication.

*psych* 1. discuss the major categories of abnormal behaviors as classified by the diagnostic and statistical manual (dsm) 2. identify the characteristics of the major categories of abnormal behavior.