31.  A big reason for this is that we contribute proportionately less in funding for the problem than any other industrialized country.

32.  A big reason for this pattern, he said, is the weight loss many experience after beginning a running program.

33.  A big reason Gachet was such a good friend to advanced painters of his day is that he and his son, Paul, were also amateur artists.

34.  A big reason is the lack of inexpensive financing.

35.  A big reason, analysts say, is that they are taking business from banks in a freer regulatory landscape for which the banks themselves lobbied vigorously for decades.

36.  A big reason for shrinking demand for OPEC oil is that oil production is rising so fast in places like the U.K., Norway, Colombia and China.

37.  A big reason for that increase?

38.  A big reason for that is because drivers and their teams are so fan-friendly.

39.  A big reason for that is the higher cost associated with making the special fuel required to meet California emission laws.

40.  A big reason for the decline of horse racing is demographics.