Answer: The black plague killed hundreds of thousands very quickly with no cure
Explanation:
Answer:
Eastern parts were richer and more populated, while western part had a symbolic value (Rome). All in all, western half collapsed quickly and doesn't have great impact on history. Eastern half is the Byzantine empire, which had a great impact on eastern Europe, it basically "created" Bulgarian, Serbian and Russian empires (of which only Russian managed to survive long enough to become a world force) and (Byzantine ) had a great influence on Ottoman empire.
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Explanation:
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.