The alimentary canal is ________.
A. the accessory organs
B. the esophagus
C. the small and large intestines
D. the series of digestive organs
Answer: D
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Toxic shock syndrome
A. is due to exotoxins produced by Streptococcus pyogenes. B. is due to exotoxins produced by Staphylococcus aureus. C. may spread from person to person. D. has a very low rate of recurrence, approximately 1%.
Most CO2 reacts with water inside red blood cells to form bicarbonate, due to the activity of
__________. Fill in the blank(s) with the appropriate word(s).
Which of the following classification categories for humans is not correct?
What will be an ideal response?
Natural selection ___________.
A. is independent of time or place B. is more of a creative process than an editing process C. and evolution cannot be directly observed D. relies on variation among individuals in a population