Bruce lives on a farm.

Bruce eats grass which contains carbon. The grass that Bruce eats remove carbon dioxide from the atmosphere by photosynthesis.

Bruce drinks water from the pond... carbon dioxide from the atmosphere dissolves in the water.

Bruce then gives off CO2 through his gas.

The house where Bruce's owner lives, the chimney combustion comes out and gives off CO2

When Bruce dies his body will decompose it will then too give off CO2

THE END