Which of the Following Is TRUE of Environmental Hazards

Multiple Choice

Which of the following is TRUE of environmental hazards?

A) Someone negatively affected by a chemical hazard may be less susceptible to a biological hazard.
B) Indoor air pollution in especially problematic in high-income areas throughout the world.
C) Humans are exposed to only one type of hazard at a time.
D) Even the human-built environment is seen as an environmental hazard.
E) Environmental factors contribute to about half of deaths worldwide.