Answer :
Bacteria appear "hollow" C.boils specimen E.little contrast with external medium .
What is Bacteria?
Bacteria are omnipresent, largely free-living creatures that frequently only have one biological cell. They make up a significant portion of the prokaryotic microbial kingdom. Bacteria, which are typically a few micrometers long and were among the first life forms to appear on Earth, are found in the majority of its habitats. Soil, water, acidic hot springs, radioactive waste, and the deep biosphere of the Earth's crust are all home to bacteria.
Through the recycling of nutrients, such as the fixation of nitrogen from the atmosphere, bacteria are essential at many phases of the nutrition cycle. The decomposition of dead corpses is a part of the nutrient cycle; bacteria are in charge of the putrefaction phase of this process. By converting dissolved chemicals, extremophile bacteria supply the nutrition necessary to support life in the biological communities surrounding hydrothermal vents and cold seeps.
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