Answer: NaCl More information: Sodium chloride (also known as salt or halite), is an ionic compound representing a 1:1 ratio of sodium and chloride ions.

Answer: The Giant Sequoia in California's Sequoia National Park More information: The tree is about 52,500 cubic feet (1,487 cubic meters) in volume. It has been alive for approximately 2,000 years.

Answer: 3 More information: Russell collaborated very little and no Erdös number can be found using research articles. But, as pointed out by Sachi Sri Kantha at "the Erdös number project" Russell and Albert Einstein did coauthor the Russell-Einstein "Peace" Manifesto of 1955.

Answer: 3 More information: Of course, as time passes, the smallest Erdős number that can still be achieved will necessarily increase, as mathematicians with low Erdős numbers die and become unavailable for collaboration.

Answer: 10 More information: The average human body contains around 10 pints of blood. Men usually have more blood than women, averaging 10-11 pints of blood.

Answer: 5 More information: Portman collaborated (using her birth name, Natalie Hershlag) with Abigail A. Baird, who has a collaboration path (Gazzaniga, Michael S. -> Victor, Jonathan D.) leading to Joseph Gillis, who has an Erdős number of 1.

Answer: South Florida More information: Although crocodiles and alligators look very similar, there is actually a difference. Alligators have wider, rounder shaped snouts, while crocodile snouts are pointed and V-shaped.