The Environment & Human health

 Viruses bacteria, and other organisms in the environment that harm human health are classified as

• biological hazards
• social hazards
• chemical hazard
• physical hazard

Toxicology deals primarily with what types of hazards?

• biological and social
• both chemical and physical
• human-made
• natural disasters

Which of the following types of people generally has a greater sensitivity to environmental hazards than the other types of people?

• teenager
• adult
• infant
• none; all have equal sensitivity

The process of measuring the chance that an environmental hazard will cause harm is called

• toxicology
• epidemiology
• a dose-response relationship
• risk assessment

Infectious diseases are diseases caused by a __________, such as a virus or a bacterium.

• pathogen
• toxicant
• pandemic
• carcinogen

A(n) __________ disease is a disease that has appeared in the human population for the first time or that has existed for a while, but is increasing rapidly or spreading around the world.

• environmental
• pandemic
• emerging
• infectious

Which of the following is an example of a social hazard that cannot easily be controlled? a. smoking cigarettes c. lack of exercise

• smoking cigarettes
• pollution from a factory near your school
• lack of exercise
• a high-fat diet

Any substance that poses a chemical hazard is considered a(n) __

• pathogen
• carcinogen
• allergen
• toxican

Chemicals called __________ cause cancer.

• carcinogen
• pathogen
• neurotoxin
• teratogen

What do asbestos, radon, volatile organic compounds, carbon monoxide, and lead all have in common?

• They are chemical hazards that can be found indoors.
• They are highly dangerous carcinogens
• Exposure to them cannot be prevented.
• They are unnatural and made only by humans.