Snails are not considered B. autotrophs
As precipitation infiltrates into the subsurface soil, it generally forms an unsaturated zone and a saturated zone. In the unsaturated zone, the voids—that is, the spaces between grains of gravel, sand, silt, clay, and cracks within rocks—contain both air and water. Although a lot of water can be present in the unsaturated zone
Cells spend most of their lives, about 78 percent of the time, not dividing in a phase called interphase. During interphase the cells get larger, replicate their chromosomes for cell division, synthesize substances that are essential to cell division, and build materials for growth and development.
The reason that this can occur in a relatively short time span is because of the speed of bacteria reproduction. They are able to reproduce rapidly which means they can evolve to be resistant to the antibiotics created.
