Answers:

Time Line:
1859-petroleum; 1860-internal; 1886-Benz; 903-gasoline; 1910-"T"; 1930s-gasoline; 1970-Clean; 1973-embargo; 1975-gasoline; 1978-gasohol; 1980-grain, Carter; 1980-energy, energy; 1 982-grain; 1987-875; 1988-ethanol.

Scrambled words:
THLANOE-ETHANOL; NOTCAE-OCTANE; OSALINGE-GASOLINE; BRANCO XNOMOIDE-CARBON MONOXIDE; SIMENOSIS-EMISSIONS; RAING- GRAIN; NORC-CORN; HOLACOL-ALCOHOL; NOZOE-OZONE; GYERNE-ENERGY; HANNECER-ENHANCER; GENYXO-OXYGEN; BUYSIDS-SUBSlDY; LOI-OlL; RATDYEHDE-DEHYDRATE; ZRIBAL-BRAZlL; RAMEFR-FARMER; EUFL-FUEL; DRYHO BORCANS-HYDRO CARBONS; DEALUNED-UNLEADED, TEVINICEN-INCENTIVE.

Word Search:
Same words as in Scrambled Words.