Chemicals & Human Health

Toxicology Problem Set

Problem 1: Natural and human-made chemicals


Which statement is the most correct?

A. Chemicals manufactured by humans are more dangerous to human health than naturally occurring chemicals.
B. Both natural and human-made chemicals are potentially toxic to humans.
All chemicals, whether natural or synthetic, have the potential to be hazardous to humans. The likelihood of harm to humans depends upon the dose.
C. Naturally occurring chemicals are more poisonous to humans than synthetic chemicals.

The Southwest Environmental Health Sciences Center
The Biology Project
The University of Arizona
Tuesday, September 16, 1997
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