21.  A second reason is the surge in sales over the Internet, which official number-crunchers find hard to track.

22.  A second reason such attacks cannot easily be thwarted is that almost anybody can make a bomb if they set their mind to it.

23.  A second reason to favor bonds is their high yield compared with the return on stocks, Gignac said.

24.  A second reason, officials said, was that the demilitarized zone would create a military vacuum that could result in the dismemberment of the country.

25.  A second bad reason for not planting sumac is its nativeness.

26.  A second reason for worry is that economic diversity provides little immunity.

27.  A second reason is bad experiences in their home countries.

28.  A second reason it is difficult to see animal corpses, he adds, is that animals tend to go into hiding when they are diseased or wounded.

29.  A second reason was the tactic of the Bolsheviks.

30.  A second reason for optimism is a look at the history of Christianity and Judaism.