Answer:
Biosafety level 3 requires at least two-door separation between the area where biohazards are used and the personnel not associated with the research, requires inward inflow into the lab and must have a visual mechanism to verify that air is flowing in the appropriate direction
Explanation:
Biosafety level 3 is required for clinical, diagnostic, teaching, researching or production laboratories working with microbes that are also following BSL-1 and BSL-2 but as these pathogenic agent can lead to life-threatening disease by inhaling it, besides other contaiment precautions, the BSL-3 facilities must have a separated entrance to laboratory door with unrestricted traffic flow and the lab must be behind two sets of self-closing doors and windows must be sealed, with a ventilation system properly directioned installed.
After the people of Illinois became too hostile for the Mormons to stay there any longer (and also, after their church's founder, Joseph Smith, was killed as a result of that violence), Brigham Young took over as leader of the Mormons and led the group out of Illinois and to the present-day state of Utah, where they established a colony on the shores of the Great Salt Lake called New Zion.
Under feudalism, a piece of land granted to lords and knights in exchange for loyalty was called a fiefs.
