It has been possible to obtain live bacteria from converted spores in dry plant specimens from the 17th century, and live microorganisms have also been found at considerable height and depth; some in the sediment that covers the bottom of the abyssal fossa of the Pacific at the opposite extreme we have fungal spores discovered by North American astronauts at several miles altitude, in the stratosphere. Some species, for example, produce sulphuric acid from sulphur compounds; others are capable of growing under conditions of high alkalinity.
From all the above, we can see the extraordinary efficiency achieved by microorganisms as living creatures, being able to thrive in the most inhospitable environments on the planet. There are many organisms that depend exclusively on the creatures with which they live, either on them or in their interior, having to adapt to the living conditions in their hosts, voluntary or not, in a very similar way as the bacteria of the boiling springs do to bring the continuous onslaught of boiling water.
For some microorganisms, relations with their hosts are destructive. Parasitic bacteriophages, for example, use their bacterial hosts mainly as a factory where they can reproduce, abandoning their leaky framework when it is no longer useful to them, to go in search of other cells.