Answer:
La teoría endosimbiótica describe cómo una gran célula huésped y las bacterias ingeridas podrían fácilmente depender unas de otras para sobrevivir, dando como resultado una relación permanente. A lo largo de millones de años de evolución, las mitocondrias y los cloroplastos se han especializado y hoy en día no pueden vivir fuera de la célula.
The correct answer is hydrogen bonds.
Snottite is a product of extremophilic bacteria which hang from the walls and ceilings of caves and are similar to stalactites, but have the consistency of nasal mucus.The main component of snottite is a sulphuric acid which is a waste product of bacteria.
In bone growth, the medullary cavity is enlarged because of the activity of osteoclasts. These are cells working to break down bone, resorbing old bones which will line in the medullary cavity. The cavity is also enlarge as the cells contribute to the increase in length and diameter of a growing bone.