What asthma is
asthma is a disease that affects your lungs. it is the most common long-term disease of children. it causes repeated episodes of wheezing, breathlessness, chest tightness, and nighttime or early morning

effects of asthma
in 2001, 20.3 million americans had asthma, and 12 million had had an asthma attack in the previous year. if a person has a parent with asthma, he or she is three to six times more likely to develop asthma than is a person who does not have a parent with asthma.

how asthma is diagnosed
4 asthma can be difficult to diagnose, especially in children under 5 years old. regular physical exams that include checks of lung function and for allergies can make the right diagnosis.

this passage presents information about asthma in which logical order?
a) chronological
b) cause and effect
c) alphabetical order
d) compare and contrast