useless trivia: 1/3 of Taiwanese funeral processions include a---------- .?

Questions

More than 20 percent of men and 10 percent of women say they've forgotten their ----------------- at least once.?

Fleas can accelerate ------------- times faster than the space shuttle.?

Half of all murders are committed with ------------?

The population of the entire world in 5000 B.C., according to the National Population Council, was ---------------?

zzzOf the 15,000-odd known species of orchids in the world, 3,000 of them can be found in ---------?