Why is nitrogen a central atom in N2O?

Arrange these events from the history of cartography in the order in which they occurred. Columbus reaches the Western Hemisphere Piri Reis map Ptolemy's world map Mercator projection? How are Pluto and Mars the same? How do the nervous system the respiratery system the circulatory system and digestive system work together? What controls cellular processes and contains DNA? What happens inside your body when you get food poisoning? How sodium chloride is a substance that has similar properties as sodium and chlorine or is it an entirely different substance with its own unique properties? How were the boundaries of the US mainland formed from the 1840s to 1853? What is the website for Menards in-home training? Is a p wave fast or slow? Where can you get up to date information on stem cell research? 1836 kg how many kilos? In which type of dry climate do you think the fewest people live? What countries are found at the north pole and south pole? Why isen't fertilization considered to be complete until the nuclei of the two cells join together? In Great Astronomers Robert Stawell Ball documents the developments in astronomy from the ancient period to the nineteenth century. He begins with a chapter on the life and works of Ptolemy.? What is the allowable capacitance and voltage difference when replacing a capacitor? What do we call the scale that measures earthquake strength? Why leaf is dipped in boiling water? Do comets revolve around other planets? What are the hardness and streak of granite?