Identify the two main materials that can be found in the inner and outer core layers of the earth.
a) iron
b) rocks
c) oxygen
d) nickel
e) dead plants

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.