Problem: Who discovered the chemical elements Potassium, Sodium and Calcium?
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A: humphrey davy

Q: Which gas makes up about 96% of the atmosphere of the planet Mars?
A: carbon dioxide

Problem: The 11th Century nobleman Rodrigo Diaz de Vivar was better known by what name?
Answer: el cid

Q: The Temple of Artemis at Ephesus, one of the Seven Wonders of the World, was destroyed on July 21, 356 BC in an act of arson. Historian Plutarch remarked that the goddess was preoccupied with the birth of whom that occurred on the same day to save her temple?
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A: alexander great

Q: Of the 8 Summer Olympics between 1896 and 1952 inclusive, how many were held outside of Europe?
What is the answer?

A: 2

question: Answer this question.

Which organisation's flag includes an image of the continents of the world flanked by olive branches on a blue field?
answer:
united nations