Thus, the geographic source of coal can be a significant factor in the physical quantity of coal necessary to provide a given quantity of energy and the resultant level of emissions.
(the geographic source of coal; can be; a significant factor in the physical quantity of coal necessary to provide a given quantity of energy and the resultant level of emissions) (a significant factor in the physical quantity of coal necessary; to provide; a given quantity of energy and the resultant level of emissions)
the geographic source of coal a significant factor in the physical quantity of coal necessary
can be to provide
a significant factor in the physical quantity of coal necessary to provide a given quantity of energy and the resultant level of emissions
a given quantity of energy and the resultant level of emissions