11.   All these factors are making Carrie Gustavson one happy museum director.

12.   But other factors make sense of what might seem uncharacteristic choices by New Jersey voters.

13.   But some arithemetic is necessary because in many cases other factors could still make a joint return advantageous.

14.   But several factors make the wage story a little brighter than the long-run data seem to suggest.

15.   But several factors make variola studies difficult.

16.   But other factors also made it more difficult for schools to predict how many students would attend.

17.   But those factors did not make him fearful of more injuries in his senior season.

18.   But those same environmental factors also make an ideal hatching ground for major forest fires, some of which have caused considerable damage over the years.

19.   But two key factors may make that cooperation more fragile this time.

20.   Do other factors make unwinding less efficient?