Why does air pollution harm forests and buildings?

Correct Answer: B

Rationale: The correct answer is B because air pollutants like sulfur dioxide and nitrogen oxides can mix with moisture in the air to form acidic compounds. When these acidic compounds dissolve in rainwater or dew, they can damage forests and buildings by causing corrosion, deterioration of materials, and harming plant life. Particulates (choices A and C) can physically damage surfaces but do not directly cause the chemical reactions that lead to harm. Dehydration of surfaces (choice D) is not a significant mechanism for the harm caused by air pollution to forests and buildings.

Correct Answer: A

Rationale: The correct answer is A because nausea, vomiting, abdominal cramps, fever, and diarrhea are common symptoms of bacterial infections. B is incorrect as it refers to intoxication rather than infection. C is incorrect as encysted larvae are not indicative of bacterial infections. D is incorrect as brain inclusions are not typically associated with bacterial infections. In summary, the symptoms listed in choice A align with typical manifestations of bacterial infections, making it the correct answer.

Correct Answer: D

Rationale: The correct answer is D, "All of the above." Medical waste can contain infectious agents like bacteria and viruses, toxic chemicals like chemotherapy drugs or disinfectants, and sources of radiation such as used radioactive materials. It is important to handle medical waste carefully to prevent exposure to these hazardous materials. Choices A, B, and C are incorrect individually as they only represent a part of the hazardous materials present in medical waste. The correct answer encompasses all potential hazards found in medical waste, making it the most comprehensive and accurate choice.

Correct Answer: B

Rationale: The correct answer is B because workers in jobs involving physical labor and risk of injury are more likely to be prescribed opioids for pain management, leading to increased risk of opioid dependence. Physical labor can result in injuries requiring pain relief, increasing exposure to opioids. Low-paying jobs (A) do not directly relate to opioid dependence. Unfulfilling work (C) may contribute to mental health issues but not specifically opioid dependence. Having access to opioids through work (D) is a consequence of the physical labor and risk of injury, not the primary reason for increased risk.

Correct Answer: D

Rationale: The correct answer is D because Personal Protective Equipment (PPE) is at the bottom of the hierarchy of control as it is the least effective method for controlling hazards. A: PPE may not be effective if not worn properly - True, improper use reduces effectiveness. B: PPE may not be effective if not worn consistently - True, inconsistent use leaves individuals exposed. C: PPE may cause other safety issues - True, improper use can lead to issues like restricted movement or impaired vision. Therefore, D is correct as it encompasses all the reasons why PPE is considered the least effective control measure.