A probability of 0.20 is the same as 20%.

Particulates rated as PM10 are more likely to cause cancer than particulates rated as PM2.5

The most common source of arsenic is

The report of which agency states, “It is paradoxical that obesity is increasing in the US while more people are dieting than ever before, spending, by one estimate, more that $33 billion per year on weight-reduction products and services?”

Which of these countries has NOT had an outbreak of vaccine-derived polio?

140/90 is normal blood pressure.

Which of these serve as a guinea pigs for many occupational cancers?

The federal government issues mandates, but state and local communities need to find a way to finance them.

Which of these has impeded the progress of the polio eradication campaign?

The highest suicide rates occur with older adults.