What are two ways to get natural gas from the ground?

There are two main categories of natural gas differentiating the origin and location of the gas: Conventional and Unconventional. Conventional natural gas can often be found together with oil reservoir deposits and can be extracted by drilling vertical wells and making use of traditional pumping techniques.

Explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.