Answer: 3 More information: Octopuses have three hearts; two branchial hearts that pump blood through each of the gills. The third heart is a systemic heart that pumps blood through the whole body.
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: Carbon More information: Scientists speculate that diamonds originated from carbon dioxide atoms 100 miles below the Earth's surface more than a billion years ago.
Answer: Black Mamba More information: The Black Mamba can reach up to 12 miles per hour. Don't be too afraid though, the Black Mamba uses its speed to escape danger, not catch prey.
