Today the world is heavily dependent on for motive power, lubrication, fuel,
dyes, drugs, and many synthetics. The widespread use of
has created serious
environmental problems. The great quantities that are burned...generate most of the air
pollution in industrialized countries, and (spills have) polluted oceans and coastlines.
--The Columbia Electronic Encyclopedia, 6th ed., 2007
Which of these natural resources correctly fills in the blanks in this excerpt? (TEKS 27D)
0 Iron
O Petroleum
Coal
O Gold