Answer:
The primary mechanism by which a cell gets rid of excess carbon dioxide (CO2) is through a process called respiration or cellular respiration. In cellular respiration, cells break down glucose and other organic molecules in the presence of oxygen to produce energy in the form of ATP (adenosine triphosphate), along with carbon dioxide and water as byproducts.
Once carbon dioxide is generated during cellular respiration, it diffuses out of the cell and into the surrounding tissues and fluids. From there, it enters the bloodstream and is transported to the lungs. In the lungs, carbon dioxide is exchanged for oxygen through the process of gas exchange during breathing. Oxygen is taken up by the red blood cells, while carbon dioxide is released into the air as we exhale.
In summary, cells eliminate excess carbon dioxide by releasing it into the bloodstream, where it eventually reaches the lungs for exhalation.
hope that helps :)