Questions: Self Test: Practice Print HPVC 101: Introduction to Health Professions Basic Concept 9) Which statement is true as it relates to the ozone layer? - The ozone layer is made up of harmful gas that is harmful to the earth's environment. - The ozone layer is in the earth's atmosphere and plays an important role in maintaining life on earth. - The ozone layer is protected from depletion by chlorofluorocarbons or CFCs according to meteorologists. - The ozone layer is in danger of full depletion by the year 2050 unless dramatic steps are taken to reduce use of fossil fuels. 10) (A) Biological pollution is caused by food waste decomposition that gets into the water supply; (B) another form of water supply contamination is runoff. - Both part A and part B are true. - Both part A and part B are false. Continue

Self Test: Practice Print HPVC 101: Introduction to Health Professions Basic Concept 9) Which statement is true as it relates to the ozone layer? - The ozone layer is made up of harmful gas that is harmful to the earth's environment. - The ozone layer is in the earth's atmosphere and plays an important role in maintaining life on earth. - The ozone layer is protected from depletion by chlorofluorocarbons or CFCs according to meteorologists. - The ozone layer is in danger of full depletion by the year 2050 unless dramatic steps are taken to reduce use of fossil fuels. 10) (A) Biological pollution is caused by food waste decomposition that gets into the water supply; (B) another form of water supply contamination is runoff. - Both part A and part B are true. - Both part A and part B are false. Continue
Transcript text: Self Test: Practice Print HPVC 101: Introduction to Health Professions Basic Concept 9) Which statement is true as it relates to the ozone layer? - The ozone layer is made up of harmful gas that is harmful to the earth's environment. - The ozone layer is in the earth's atmosphere and plays an important role in maintaining life on earth. - The ozone layer is protected from depletion by chlorofluorocarbons or CFCs according to meteorologists. - The ozone layer is in danger of full depletion by the year 2050 unless dramatic steps are taken to reduce use of fossil fuels. 10) (A) Biological pollution is caused by food waste decomposition that gets into the water supply; (B) another form of water supply contamination is runoff. - Both part A and part B are true. - Both part A and part B are false. Continue
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Solution

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The answer to question 9 is the second one: "The ozone layer is in the earth's atmosphere and plays an important role in maintaining life on earth."

Explanation for each option:

  • The first option is incorrect because the ozone layer itself is not harmful; it actually protects life on Earth by absorbing the majority of the sun's harmful ultraviolet radiation.
  • The second option is correct because the ozone layer is indeed in the Earth's atmosphere and it plays a crucial role in protecting life by filtering out harmful UV radiation.
  • The third option is incorrect because chlorofluorocarbons (CFCs) actually contribute to the depletion of the ozone layer, not its protection.
  • The fourth option is partially correct in that the ozone layer is in danger, but it is not solely due to fossil fuels; CFCs and other ozone-depleting substances are the primary culprits.

The answer to question 10 is: Both part A and part B are true.

Explanation:

  • Part A is true because biological pollution can indeed be caused by the decomposition of food waste that contaminates the water supply.
  • Part B is also true because runoff, which can include pollutants from agriculture, urban areas, and other sources, is a known form of water supply contamination.

Summary: 9) The correct statement about the ozone layer is: "The ozone layer is in the earth's atmosphere and plays an important role in maintaining life on earth." 10) Both part A and part B are true regarding biological pollution and water supply contamination.

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