To maintain aerobic fitness, one should exercise at his or her target heart range:

A) 5 times a week, 60 minutes at a time
B) 7 days a week for 15 minutes at a time
C) once a week for 2 hours
D) 3 times per week for 20-30 minutes at a time

D

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This form of treatment causes cancer tumors to shrink

a. Radiation therapy b. Chemotherapy c. Immunotherapy d. Acupressure

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The life span of the neutrophil is spent in three compartments. Which compartment is the primary site of host defense?

a. Bone marrow b. Liver c. Thymus d. Tissues

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