This week, an American study shows _________ between air pollution and heart disease.

A new study shows that air pollution may be ____________ for heart disease than scientists have thought.

The study found that estimates of the effects of air pollution were often __________ than between cities.

The study involved women who had no sign of cardiovascular disease at the _____________.

The researchers also examined levels of ____________ in the air in thirty-six areas across the country.

In the study, every ten-microgram increase in pollution was linked to a _________ increase in the risk of a cardiovascular event.

Winter has brought _____________ to parts of the United States.

Hypothermia is a condition that happens when the body’s inner temperature ___________ thirty-five degrees Celsius.

James Kim died after their car became __________ in a mountain snowstorm.

Only one man’s body was recovered. The other men are _____________.