Atelectasis is caused by occupational exposure to coal dust. a. true b. false

1 answer:

6 0

The statement is true. Atelectasis is the collapse or closure of a lung resulting in reduced or absent gas exchange. It may effect part or all of a lung. An airway blockage also can cause Atelectasis. A blockage may be due to a foreign object, a mucus plug, lung cancer, or a poorly placed breathing tube from a ventilator. When a blockage occurs, the air that's already in the air sacs is absorbed into the bloodstream.

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You isolate an infectious substance that is capable of causing disease in plants, but you do not know whether the infectious age

Novosadov [1.4K]

I. treating the substance with nucleases that destroy all nucleic acids and then determining whether it is still infectious

Explanation:

Analysis of the nature of the specimen like the infectious agents (bacterium, virus, viriod, or prion) is very important to diagnose the diseases caused by them, investigate disease outbreak, to determine the clinical course of the infectious disease etc.

There are many methods like direct detection, cultivation assays, serological assays to detect the pathogen type.

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It is d hope it helps

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For science class, your teacher gives you and your partner a ball. She asks you to figure out a way to balance forces that you a

UkoKoshka [18]

Answer:

A.Both of you pull with equal force on opposite sides of the ball.

Explanation:

Balanced forces means that the total force or the sum of the force done on the object should be equal to 0 newtons or in other words, it should not be moving.

Force is defined as the push or pull on an object. For both people to balance out the forces on the ball while both applying a force, you need to do this from opposite sides.

You could either pull with equal forces on opposite sides of the ball or you can push with equal forces on opposite sides of the ball.

→ ball ←

← ball →

For the other choices, if you both push or pull on the same side, the ball would move that direction because there is no opposing force.

ball → →

If one pushes while the other pulls on opposite sides, it will move the direction you are pulling and pushing.

→ ball →

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valentina_108 [34]

Answer:

are natural world,based on a body of fact that have been repeatedly confirmed through observation and experiment.

Explanation:

the are realiable account for the real world

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