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★ Nutrition and Calorific Value Quiz
Diagram above show the human digestive system. Which of the following organs secrets hydrochloric acid?
A. Organ P
B. Organ Q
C. Organ R
D. Organ S
Select your answer:
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Topics:
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Economic importance of Bacteria › ViewThe ecological roles filled by prokaryotes include all of the following except
A. decomposers
B. producers
C. scavengers
D. nitrogen fixers
Visual Impairment › View
Campimetry techniques are used to measure
A. Visual acuity
B. Visual field
C. The two are correct