Answer: Paul Erdős
More information: Erdős published at least 1,525 mathematical papers during his lifetime. He engaged more than 500 collaborators and devoted most of his time to mathematics up until his death in 1996 at the age of 83 years old.
Answer: AB negative, 1% of the population is AB negative
Answer: Mercury and Bromine
More information: Mercury and Bromine are the only two elements on the periodic table that are liquid at room temperature. These elements are liquids because the intermolecular forces are strong enough so that it does not vaporize.
Answer: Mauna Loa
More information: Mauna Loa is located in Hawaii and is one of the five volcanoes that forms the island. The last time Mauna Loa erupted was April 15, 1984.
More information: Sodium chloride (also known as salt or halite), is an ionic compound representing a 1:1 ratio of sodium and chloride ions.
More information: Uranus is the seventh planet from the Sun. One day on Uranus last about 17 hours and 14 minutes.