Pests in food establishments are usually very good vectors of many types of diseases, not just food borne illnesses (rats for example used to carry the fleas that carry the bubonic plague). Pests are very good at contaminating foods, as they will not only contact food in storage, but they will eat (so contact with saliva), lay eggs or have their young around, and will defecate and urinate. This means that it is highly likely to cause some food borne or other illness.
Sedimentary rocks are made from eroding other rocks and they are deposited on other rocks, they are younger than the underlaying rocks hence could only be formed on older underlaying rocks. If u have any more questions feel free to ask!
Chargaff’s rules of base pairing gave Watson
and Crick confidence that their model was correct,
because their model agreed with Chargaff’s
observations of the relative percentages of A, T,
G, and C in DNA.
Well, it starts at the very bottom
Cells
Tissues
Organs
Organ Systems
Organisms
The level below Organs is Tissues.
Thus, Tissues is the level just below organs in complexity.
This would actually be known to be called the " reticular formation". This would be a <span>network of nerves located in the brainstem. It would play a big role of course, and based on this, it helps with the purpose that it contains.
</span>The <span>reticular formation </span>is a network of nerves located in the brainstem.
