The most cleanly burning fossil fuel available, producing the least pollutants, is

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

. the sierra madre fault zone of southern california

. the san andreas fault california