The hygiene hypothesis predicts that the lowest levels of asthma should occur in people living in
A) poor rural families in developing countries.
B) wealthy families in developing countries.
C) poor urban families in developed countries.
D) wealthy families in developed countries.
Question 2
Examining an old abandoned home several months after a flood, a relief worker suddenly experiences difficulty breathing. At the hospital, she learns that she experienced
A) a chronic respiratory illness, tuberculosis, more common in the developed world.
B) a chronic respiratory illness, malaria, more common in the developing world.
C) an acute respiratory illness, asthma, more common in the developed world.
D) an acute respiratory illness, schistosomiasis, more common in the developing world.
Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
Asthma. (a) A normal bronchiole. (b) An asthmatic bronchiole. During an asthma “attack,” the bronchi
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Advection of cold and warm air at different levels.
Various Levels of Organic
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