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.
Coelacanth Genes Mapped, "Living Fossil" Evolved Slowly
Levels of Prevention
Monstrous people from distant lands depicted in a fifteenth-century European woodcut.
Asthma and emphysema.
Periodic oscillations of the levels of glycolytic intermediates in yeast cells undergoing glycolysis
An overview of the levels of organization in nature