useless trivia: What Word Means: Stiffness - Preciseness?

Questions

One ragweed plant can release approximately how many grains of pollen?

Only 14% of americans say they've done this with the opposite sex. what is it?

Open in the early 20th century, what was used to treat epilepsy?

Oswald?

Other than meat, what is also known as a leg of mutton?