Eubacteria are classified by their shape and organization. Spirilla, Bacilli, and Cocci are the usual shapes of this type of bacteria.<span />
I believe the answer is minerals.
Minerals are inorganic substances that the body cannot manufacture but that act as catalysts, regulating many vital body processes. Nutrients are substances in food that the body needs to function properly to grow, repair, and supply it with energy. These includes, carbohydrates, proteins, lipids, vitamins and minerals.
- rock salt and gypsum: evaporation- dolostone: chemical replacement- chert and iron-rich formations: precipitation
