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What does the ozone layer do?
  • a)
    It protects us from meteors
  • b)
    It protects us from violent solar flares
  • c)
    It protects us from ultra violet radiation
  • d)
    It helps us breathe
Correct answer is option 'C'. Can you explain this answer?
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What does the ozone layer do?a)It protects us from meteorsb)It protect...
The ozone layer acts as a shield, protecting us from harmful ultraviolet (UV) radiation emitted by the sun. UV radiation can cause various health issues, including skin cancer, cataracts, and weakened immune system. The ozone layer absorbs and filters out most of the UV radiation, allowing only a small amount to reach the Earth's surface. This crucial role of the ozone layer makes it essential for the preservation of life on our planet.
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Adapted from “Authority: The Unavoidable” in What’s Wrong with the World by G.K. Chesterton (1912)The important point here is only that you cannot get rid of authority in education. It is not so much that parental authority ought to be preserved. The more, important truth, is that such authority cannot be destroyed. Mr. Bernard Shaw once said that he had hated the idea of forming a childs mind. In that case, Mr. Bernard Shaw had better hang himself, for he hates something inseparable from human life. I only mentioned [earlier in the book] the drawing out of the child’s abilities in order to point out that even this mental trick does not avoid the idea of parental or scholastic authority. The educators drawing out is just as arbitrary and coercive as the instructor’s action, for he draws out what he chooses. He decides what in the child shall be developed and what shall not be developed.The only result of all this pompous distinction between the “educator” and the “instructor” is who the instructor pokes where he likes and the educator pulls where he likes. Exactly the same intellectual violence is done to the creature whom is poked and pulled. We must all except the responsibility of this intellectual violence, whether from poking or from pulling.Education is violent; because it is creative. It is such because it is human. It is as reckless as playing on the fiddle, as dogmatic as drawing a picture, as brutal as building a house. In short, it is what all human action is, it is an interference with life and growth. After that it is a trifling and even a jocular question whether we say of this tremendous tormentor, the artist Man, that he puts things into us like a pharmacist or draws things out of us.Choose the answer that best corrects the bolded portion of the passage. If the bolded portion is correct as written, choose "NO CHANGE."

Directions: Read the passages and choose the best answer to each question.PassageThe photoelectric effect is the emission of electrons from matter upon the absorption of electromagnetic radiation, such as ultraviolet radiation or X-rays. Electromagnetic radiation is made up of photons, which can be considered finite packets of energy at various levels. Photons have properties attributed to both particles and waves. This phenomenon is known as the wave-particle duality.The photoelectric effect is especially noticeable when dealing with metals. When a metallic surface is exposed to electromagnetic radiation that is above the minimum energy threshold (which is specific to the type of surface and material), photons are absorbed and electrons are emitted. No electrons are emitted for radiation with energy frequencies below that of the threshold, as the electrons are unable to gain sufficient energy to overcome the attractive forces within the metal. A scientist wishing to measure the photoelectric effect so as to further understand the nature of photons conducted the following experiments.Experiment 1Wishing to measure the energy required to produce the photoelectric effect on a surface of a sheet of copper, the scientist directed a beam of radiation at different frequencies (energies)—measured in Hertz (Hz)—onto the surface.After 5 minutes, the charge—measured in volts (V)—of the sheet of metal was recorded. This was done because if electrons were emitted from the surface, the metal would take on a positive charge. The results were recorded in Table 1.Experiment 2Solar cells used to generate electricity are based on the concept of the photoelectric effect; however, the goal of the cell is to capture the emitted electron and create an electric current. The scientist measured the effects of different frequencies (in Hz) of radiation on the current (in V) generated by a certain solar cell. The results were recorded in Table 2.Q.Do the results of the experiments help to explain the nature of photons as finite packets of energy at various levels?

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What does the ozone layer do?a)It protects us from meteorsb)It protects us from violent solar flaresc)It protects us from ultra violet radiationd)It helps us breatheCorrect answer is option 'C'. Can you explain this answer?
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