Topics: Living Organisms Quiz
Cells need nutrients for energy. Which system is responsible for breaking down food to provide cellular energy?
A. digestive
B. excretory
C. circulatory
D. respiratory
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The respiratory system in the human body is shown in the diagram below. What is the main relationship between the trachea, bronchioles, and alveoli?
A. They work together to transport nutrients.
B. They work together to regulate body temperature.
C. They work together to store fluids to prevent dehydration.
D. They work together to maintain the oxygen level in the blood.