A pharmaceutical company wishes to study a possible new headache medicine. They are doing human trials with 1000 volunteers who experience frequent headaches. The researchers will need to ________
A) put all women in the control group and all men in the experimental group
B) have 10 volunteers in the control group
C) control for the type of headache–stress, migraine, or other causes
D) give all 1000 volunteers the same amount of the new medication
E) divide the groups by level of health
C
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What is fetch?
a. The undulation of dispersed waves across the surface of the ocean b. The maximum wave size theoretically possible for a specific wind strength and duration c. The movement of wind waves in relation to wave crests d. A progression of swells with the same origin
e. The uninterrupted distance over which wind blows without a change in directionWhich of the following is NOT part of the definition of a desert?
a. high temperatures b. mean annual rainfall of less than 25 centimeters per year c. capability to evaporate more water than falls as precipitation d. incapable of supporting abundant life e. sparse vegetation
Bacteria are not a major source of protein for infaunal organisms.
Answer the following statement true (T) or false (F)
_________________ took a different path from most of the other Eastern bloc countries in that it did not distance itself from its Russian connection. This country has consequently experienced authoritarian governments well into the 21st century.
-Poland -Belarus -Hungary -Romania -Czech Republic