There is at least 10 times as much hydrogen in the universe as any other substance. You can't buy interplanetary dust at the store, so we have to use sand and dirt in its place. Sand and dirt have the minerals, and simple compounds that are found in comets. But dirt also contains bacteria, and mold, which are not found in comets. These other things have been created over the eons since the earth was formed.
Organic material means anything made up of carbon, hydrogen, nitrogen, and oxygen.
All living things are made mostly of these four substances. Sugar, alcohol, and methane are also organic compounds. Corn syrup represents simple organic compounds that were probably present in the solar nebula, and helped form life later on. You should have a muddy, slightly icky- smelling, sludge. Ammonia, the same compound we use to clean windows, is another organic compound which existed in the solar nebula.