The Daily Quiz - Science and Nature Today's Questions: Question 1: What chemical compound makes gypsum? Question 2: What is the name of the large mass of molten rock immediately beneath the Earth's crust? Question 3: What is the chemical potassium hydrogen tartrate often used for? Question 4: What is the chemical sodium tetraborate decahydrate often used for? Question 5: The world was declared safe from which virus in 1979? Question 6: What word describes the porous openings on the surface of leaves? Question 7: What is the term for rendered fat that is used in making soap or candles? Question 8: What is the word for a group of cranes? Question 9: Who developed the theory of evolution by natural selection? This podcast is produced by Klassic Studios Learn more about your ad choices. Visit megaphone.fm/adchoices