useless trivia: What Word Means: To Make (A Rope) Undone?

Questions

Shorthorn cattle were the first breed to have their own herdbook, in which county were they developed?

In Treasure Island, who apart from JimHawkins narrates part of the story?

Shell Oil was developed by Marcus Samuel, what was the original family business?

(?) Which American became world chess champion in 1972?

Where in the body would you find the fontanelle?