Question

how do animals get rid of the carbon dioxide? what body system is involved with removing this waste? they exhale it; the respiratory system is involved. they sweat it out; the digestive system is involved. they absorb it; the nervous system is involved. they urinate it; the excretory system is involved.

Explanation:

Animals produce carbon dioxide as a waste product of cellular respiration. The respiratory system is responsible for gas exchange, where animals inhale oxygen and exhale carbon dioxide. Sweating (digestive system is incorrect for CO₂ removal), absorbing (nervous system is not for waste removal), and urinating (excretory system removes other wastes like urea, not CO₂) are not the correct ways or systems for CO₂ removal. So the correct option is the one about exhaling and the respiratory system.

Answer:

A. They exhale it; the respiratory system is involved.