Modern biologists still might consult the results of the Challenger expedition in order to:
A) Look at their charts of the South Pole.
B) See the results of experiments in their on-board scientific laboratory.
C) Consult Edward Forbes' reports on the fauna.
D) Compare their deep-sea specimens with those taken by this expedition.
D) Compare their deep-sea specimens with those taken by this expedition.
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Similar structures that have evolved independently in different lineages that do not share common ancestry are called
____.
a. analogous structures b. homologous structures c. vestigial structures d. convergent structures e. divergent structures
Select the correct sequence of structures that inulin (a filtered, non-absorbed compound) will travel through in the urinary system.
a. Renal artery, proximal tubule, distal tubule, loop of Henle, collecting duct, bladder b. Renal artery, Bowman's capsule, proximal tubule, pericapillary network, renal vein c. Renal artery, afferent arteriole, proximal tubule, loop of Henle, distal tubule, collecting duct, ureter, bladder, urethra d. Renal artery, afferent arteriole, efferent arteriole, Bowman's capsule, loop of Henle, collecting duct, ureter, bladder, urethra
Life probably would never have emerged on Earth if the ancient atmosphere had been the same as the present one in
regard to the content of ____. a. carbon dioxide b. hydrogen c. oxygen d. nitrogen e. carbon monoxide
Carbon enters the atmosphere through all of the following sources EXCEPT ____
a. cell respiration
b. volcanic eruptions c. burning of fossil fuels d. wind erosion e. fire