Answer:
L-form bacteria are distinct from mycoplasmas, because Mycoplasma spp. do not originate from bacteria that normally possess a cell wall. ... Some of these bacteria remain as CWDB (stable L-forms), whereas others revert back to possession of a cell wall (unstable L-forms).
Explanation:
The function of the respiratory system is to exchange two gases: oxygen and carbon dioxide.
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The answer is <span>B. Stratosphere </span>
