How should a woman take oral contraceptives?

The MAJOR advantage of using a condom for contraception is:

The following are 3 major preventable problems in women EXCEPT:

Infertility is the term used to define the inability to conceive after 1 year

Which condition is a transient, self-limiting mood disorder that affects new mothers after childbirth?  

  What is the probability that an event is certain to occur?

  As a procedure is repeated again and again, the relative frequency of an event tends to approach the actual probability.  This is known as

Blood lead levels of low, medium and high used to describe the relationship between lead and IQ.

  Find the mode for the given sample. 20,  38,  46,  38,  49,  38,  49

Among the subjects surveyed, as part of the California Health Interview Survey (CHIS), several subjects are randomly selected and their heights are recorded.