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.
Antifreeze in living organisms
Synapomorphies at different levels
Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood.
The plesiadapiforms may have been primates, but they lacked certain features, such as a postorbital
Surgical Hand Hygiene/Sterile Scrub
Energy passes among trophic levels