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Digiron [165]
4 years ago
6

HELP!! MULTIPLE CHOICE!

Biology
1 answer:
Scrat [10]4 years ago
5 0
I believe the answer to your question is D
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The structure that has both respiratory and digestive functions is the:
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Which type of respirator delivers clean air to the breathing zone from a tank worn by the operator?
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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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6 0
2 years ago
Based on the Punnett square, what is the phenotype of the offspring? Hh HH tall short Mark this and return
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There are two possibilities: The offspring can either be HH or Hh; therefore, there is a 50% chance of the offspring being one of the two above. This means that there is a 50% chance off the offspring being tall or short.

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3 years ago
Both retinal disparity and convergence increase as an object gets closer to the individual. T/F
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The correct answer is true.

Hope that helps, even though I am late.
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The earth is composed of three different chemical layers core mantle and crust the formation of these layers was from a process
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incompatible elements


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