The key components of the immune system are white blood cells known as _____
a) viruses.
b) lymphocytes.
c) pathogens.
d) antibodies.
Answer: d
Psychology
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To determine the range, we simply
a. subtract the highest score minus the lowest score. b. subtract the lowest score minus the highest score. c. need to know the lowest and highest scores. d. average the lowest and highest scores.
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In 2009, the highest rate of HIV diagnosis was in ____
a. Hispanic/Latinos c. American Indians b. Blacks d. Whites
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