Second and third class levers both have
a. the fulcrum between the effort and load
b. effort applied in the same place
c. two loads and fulcrums
d. the fulcrum at one end of the lever

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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.

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