I don't know answer to this question, but I can explain what it wants for you to name, if that would helped you.
It says that you have to find 4 doings of bacterias (micro-organisms) in the organ system for digestion.
Remittent fever
Remittent fever is a high body
temperature which shows fluctuations each 24-hour period but never gets to
normal. The pattern of this fever is not a distinguishable feature of any
disease. For the question given above, Mrs. Harris is describing remittent
fever.
<span>The most frequent type of ground or surface-based temperature inversion is the one produced by terrestrial radiation usually on a clear, still night. Temperature inversion refers to the increase in temperature brought about by the rise in altitude. On the other hand, terrestrial radiation refers to the radiation naturally emitted by radioactive materials present on Earth. Among these are radon, thorium, and uranium. </span>
D. They convert glucose into another form of energy used by cells.