A because when the little fish die they sink to the bottom, and after time the skeletons build up on top of each other.
Glycolysis, Krebs cycles and electron transport chain are the three steps of cellular respiration, for converting glucose into energy.
Those small sections are called Genes
The substance is colder than it was because when particles move very quickly its either how or boiling so if its slow its cold and if it freezed the particles are well frozen