EVERYDAY SCIENCE

Detailed explanation-1: -Giraffes breathe in oxygen and release carbon dioxide just like humans and other mammals do. When a giraffe breathes oxygen into its body, the air travels down the trachea and into the lungs.

Detailed explanation-2: -Oxygenated air, taken in during inhalation, diffuses across the surface of the lungs into the bloodstream, and carbon dioxide diffuses from the blood into the lungs and expelled during exhalation.

Detailed explanation-3: -Animals breathe, oxygen and give out carbon dioxide.

Detailed explanation-4: -In animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon. The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale.