When the water evaporates, it becomes clouds. This is known as condensation. I would guess that is when it happens.
The proteins are called Histone proteins. Chromosomal DNA is packaged such that the strands of DNA are wound around histone proteins and fold into complex ways to form chromosomes. The histone proteins are positively charged proteins that strongly adhere to negatively charged DNA and form complexes called nucleosomes. Each nucleosome is composed of double-helical DNA wrapped.
Soot is mainly composed of carbon. The black particles is ALL carbon because of the incomplete combustion of the hydrocarbons. Therefore, your answer is B, black carbon.
