Title: George VI.
Question: Which agreement was signed in 1938?

Title: Geological history of Earth.
Question: It is believed that a very warm earth would lead to more recycling of what?

Title: Gene.
Question: Each of a parent's two genes for each trait will sort independently into gametes according to what Mendelian principle?

Title: Gregorian calendar.
Question:
Attempting to use Gregorian dates for earlier events on the Julian calendar should be used with what action?