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Author Question: Nomads utilize multiple resources so that some will support them if others fail. This strategy is ... (Read 172 times) |
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.