DNA, nucleosome, coils, supercoils, chromosome.
a cell adapts using natural celection in the long term
in the short term, look at this Wikipedia article.
https://en.wikipedia.org/wiki/Cellular_adaptation
They are reactants because they are present before the reaction.
Diamonds, as it contains carbon atoms in tetrahedral
From the above foods; oil, bread, steak, chicken, butter and pretzel, only 2 contain lots of carbohydrates. Colour the bread and the pretzel.