1) What system is this? a) Respiratory System b) Excretory System c) Circulatory System d) Digestive System 2) What system is this? a) Digestive System b) Excretory System c) Circulatory System d) Nervous System 3) What system is this? a) Excretory System b) Nervous System c) Circulatory System d) Respiratory System 4) What system is this? a) Excretory System b) Circulatory System c) Digestive System d) Respiratory System 5) The air I breathe in goes down my trachea to my ______? a) Brain b) Stomach c) Lungs d) Heart 6) My body needs ______ from the air to live. a) Oxygen b) Hydrogen Peroxide c) Carbon Monoxide d) Carbon Dioxide 7) I breathe out a gas called ___________ that my body does not need. a) Carbon Dioxide b) Oxygen c) Helium d) Nitrogen 8) The food I eat goes down my esophagus to my __________. a) Kidney b) Stomach c) Bladder d) Brain 9) Which system brings oxygen to your whole body? a) Excretory system b) Circulatory system c) Respiratory system d) Digestive system 10) Which system breaks down food to create energy? a) Excretory system b) Circulatory system c) Digestive system d) Respiratory system

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