Refer to the accompanying figure. What is the function of the structure labeled as 6?
a. digestion
b. food intake
c. water discharge
d. waste elimination
e. asexual reproduction
ANSWER: d
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What is the maximum number of electrons in the second energy shell of an atom?
A. 8 B. 4 C. 32 D. 2 E. 18
Describe endotoxins and exotoxins. What effects do they each have on infected persons? What will be an ideal response?
Which variation could be subject to natural selection?
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