Examlex
Which of the following best describes why it is difficult to measure the effect of toxic substances on population health?
Infectious Disease
Illnesses caused by pathogens such as viruses, bacteria, fungi, or parasites that are contagious.
Life Expectancy
Life expectancy refers to the average period that a person is expected to live based on demographic factors such as the year of their birth, their current age, and other social factors.
Chronic Diseases
Long-lasting conditions that can be controlled but not always cured, affecting an individual's quality of life.
Infectious Diseases
Diseases caused by pathogenic microorganisms, such as bacteria, viruses, parasites, or fungi, that can be spread directly or indirectly from one person to another.
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