An air-purifying respirator that employs a blower to pump air through filters or cartridges and into the user's breathing zone is known as a powered air-purifying respirator, or PAPR. In comparison to a powered or negative-pressure half mask, this generates a positive pressure inside the facepiece or hood, increasing protection.
<h3>What kind of respirator offers a separate source of clean air?</h3>
For entry into or exit from settings regarded as IDLH, Self-Contained Breathing Apparatus (SCBAs) are employed. They can be either open circuit or closed circuit and contain their own breathing air supply.
<h3>What 2 categories of respirators exist?</h3>
Air-purifying and supplied-air respirators are the two main categories of respirators. Respirators that purify the air remove airborne pollutants such particles, dangerous vapors, and/or gases. They are suitable for use in surroundings with low levels of pollution and in areas with enough oxygen.
<h3>When should you use an air purifying respirator?</h3>
a small, unproven area. a lack of oxygen in the atmosphere. Firefighting. Contaminants with a lower explosive limit (LEL—the concentration at which a gas or vapour could ignite) of at least 20%
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brainly.com/question/3627134
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Answer:
consumers:
- fox
- buzzard
- rabbit
- mouse
- titmouse
- grasshopper
- butterfly
- snake
- frog
- dragonfly
- greenfly
- ladybird
producers:
- plantain
- berries
- grasshopper
- rabbit
- mouse
- titmouse
- snake
- frog
- butterfly
- ladybird
- greenfly
- dragonfly
Explanation:
I might be super wrong lol take this with a grain of salt eheh
B - To live in less extreme environments than most Archaebacteria.<span>♥</span>
It is because it's easy for them to propagate there.......
