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Zina [86]
3 years ago
5

Why do you need only one polio vaccination, but a new flu shot every year?

Biology
1 answer:
nevsk [136]3 years ago
3 0

Answer:

The flu virus mutates

Explanation:

We need a new vaccine for each new strand of a flu virus

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Unattached microbes are moved from the lungs to the epiglottis by the _______ effect.
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Answer:

The unattached microbes are moved from lungs to epiglottis by the <u>mucociliary escalator effect.</u>

Explanation:

Mucociliary escalator, also known as mucociliary clearance, is one of the major defense mechanisms that protects the lungs. It describes the self-cleaning mechanism of the bronchi which are present in the lungs. The effectiveness of this mechanism depends on the properties of the produced mucus and on the quality and number of the cilia present in the lining of the airway.

Therefore, the unattached microbes are moved from lungs to epiglottis by the <u>mucociliary escalator effect.</u>

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2 years ago
As a student in an environmental science class, you have been asked to explain the greenhouse effect and the problem we face, in
ser-zykov [4K]

C) The increase in greenhouse gas emissions is like placing an extra log on the fire to produce more heat.

Explanation:

The increase in greenhouse gas emission cannot be likened to placing an extra log on the fire to produce more heat.

In essence, the earth is not receiving more heat than usual from the sun. It is not getting more heated.

  • Greenhouse gases prevents heat from being lost from the earth surface as long wave radiation.
  • This in turn will warm and heat the earth surface.
  • The more the greenhouse gases, the more heat that is trapped within the earth.
  • The greenhouse gases is the cover that prevents heat from being lost.
  • Global warming is what results.
  • An increase in heating might not cause warming of the house if the house is open.
  • So also, if the earth receives more energy from the sun, the temperature might not increase if no greenhouse cover is available.

Other analogies shows heating(global warming) and cover(greenhouse gases) except of C.

learn more

Greenhouse gases brainly.com/question/4580761

#learnwithBrainly

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