Answer:
Although they have different cultural identities, the several nations, which are part of the indigenous peoples of the Pacific Northwest Coast have some traditions, practices and beliefs in common, such as the potlatch ceremonies. In the potlatch, people gathered in order to commemorate a specific event, which could be the raising of a Totem, marriages, changing of seasons or the election of a new chief.
Explanation:
These ceremonies were held in competition with one another, providing an ocasion to display wealth and power, by distributing important gifts to the guests, as well as entertaining the visitors with highly skilled dancers.
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.
