Question

which of these is a long-term human health issue likely caused by air pollution?

a. dementia

b. heart disease

c. bioremediation

d. damaged hearing

Explanation:

• Option A: Dementia's long - term link to air pollution is not as well - established and direct as other options for long - term health issues from air pollution.
• Option B: Air pollution, especially with pollutants like fine particulate matter, can enter the bloodstream and cause inflammation, oxidative stress, and damage to blood vessels over time, which are risk factors for heart disease. This is a well - documented long - term health issue associated with air pollution.
• Option C: Bioremediation is a process of using organisms to clean up pollution, not a human health issue.
• Option D: Damaged hearing is usually caused by factors like loud noise exposure, not air pollution.

Answer:

B. Heart disease