41.   Although all pigmented lesions change over time, melanomas do so in size, shape or color rapidly, in weeks to months.

42.   Although the theories behind which foods enhance romance have changed over the years, man has turned to the dinner table for aphrodisiacs for centuries.

43.   Although the two men met only briefly, there is considerable evidence regarding their attitudes toward each other and, more significantly, how those attitudes changed over time.

44.   Among professors, views about grades and honors have changed over time.

45.   And humor changes over time.

46.   And the whole idea of what a Strauss soprano is has changed over the years.

47.   And, of course, it all changes over time.

48.   And, to make matters more complicated, the NAIRU can change over time.

49.   As diets change over time, so do our color preferences, said Doyle, president of the Consumer Network of Philadelphia and a packaging and consumer preference researcher.

50.   As society has changed over the years, so has adolescence.