1. You and your classmate are discussing different organs and organ systems within the human body. Your friend states that the excretory system includes multiple organs, and one of those organs is the
lungs. You argue that the lungs can't possibly be in the excretory system since it is part of the
respiratory system. Which of the following choices would be the best statement that your friend
would use to justify why the lungs help keep homeostasis for the excretory system?
A. The lungs bring in oxygen, which is a vital gas to keep our cells alive and healthy.
B. The lungs exhale carbon dioxide, which is a waste gas and needs to be removed from the body.
C. The lungs provide cells with a gas that is important for the cell process of respiration.
D. The lungs remove waste in the forms of solids, liquids, and gases that could be harmful for the body,