useless trivia: What Word Means: A Genus?

Questions

about one third of american adults are at least ---------- percent above their recommended weight?

after 27 years, ---------- made her debut as a flinstone vitamin in 1996?

an average person laughs about ---------- times a day?

banging your head against a wall uses ---------- calories an hour?

bernard clemmens of london managed to sustain a ---------- for an officially recorded time of 2 mins 42 seconds?