TINY AIR PARTICLES CAN CAUSE HEART ATTACK High levels of air pollution can trigger heart attacks in at – risk people exposed for even a short time, a study has found. Researchers who interviewed 772 Boston – area patients about 4 days after their attacks found that the onset of symptoms correlated with times of high daily air pollution. Tiny, invisible particles have long been thought to cause long – term cardiovascular diseases. The new study is the first to examine short – term effects on the heart, said senior author Dr. Murray Mittleman, Director of Cardiovascular Epidemiology at Boston‟s Beth Israel Deacomess Medical Centre.
The study of 489 men and 283 women, conducted from January 1995 to May 1996, defined at – risk people as obese, inactive or with a history of heart problems. It appears in Circulation, Journal of the American Heart Association.
What part of speech is heart?
a) Noun
b) Verb
c) Adjective
d) None of the above
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Answer:
d)none of the above
Explanation:
Because it is conjuction
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