Energy use by individuals varies among countries primarily because of differences in (select all that apply):
A. standard of living.
B. the need to heat buildings in countries at
high latitude.
C. the need to cool buildings in countries near
the equator.
D. amount of travel.
E. the type of food consumed.
A,B,D
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The Bohr shift on the oxygen-hemoglobin dissociation curve is produced by changes in _____
A) the partial pressure of oxygen B) the partial pressure of carbon monoxide C) hemoglobin concentration D) temperature E) pH
A breath test assaying for radioactive carbon dioxide may be used to indicate the presence of
A. E. coli. B. Pseudomonas. C. Streptococcus pyogenes. D. Helicobacter pylori.
In humans, the allantois:a
stores embryonic nitrogenous wastes. b. eliminates nitrogenous wastes from the embryo. c. contributes to the formation of the blood vessels in the umbilical cord. d. secretes amniotic fluid. e. serves as a temporary center for formation of blood cells
__________ is a process that _________ genetic variability, and ___________ is a process that ____________ genetic variability.
Fill in the blank(s) with the appropriate word(s).