useless trivia: What Word Means: In Greek Mythology, The King Of Tegea?

Questions

During WW I, what day of the week was the recommended meatless day?

Dutch-born Swiss scientist, who discovered basic principles of fluid behavior?

Each body cell contains how many chromosomes?

Each unit on the Richter scale is euivalent to a power factor of how much?

Earth's outer layer of surface soil or crust is called the?