Answer:
1930s
Modern biodiesel fuel, which is made by converting vegetable oils into compounds called fatty acid methyl esters, has its roots in research conducted in the 1930s in Belgium, but today's biodiesel industry was not established in Europe until the late 1980s.
Explanation:
I'm not sure if i fully understood your question but i'll go ahead and answer it .. The DNA molecule has the promotor region which is detected by the transcription factors that are responsible to start transcription ( and hence , unzipping the dna strands )
Answer:These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.
