B) ionic bond
(although in reality, every bond is fundamentally the sharing of a pair of electron. but due to unmutal electonegativity, the molecule becomes polar)
####3 ##################### 2AS###################
Heat energy is absorbed by the substance.
Igneous Rock because all those ingredients are in them
Nit<u>ITE</u><u /> is NO<u>2</u><u />
nitr<u>ATE</u><u /> is NO<u>3</u><u />