Use the following to answer question: 
-(Table: Costs of Producing Bagels) Use Table: Cost of Producing Bagels.The marginal cost of producing the sixth bagel is:
Definitions:
Excess Blood
A condition where there is more blood in the body or a part of the body than what is considered normal or healthy.
Bone Tissue
A hard, dense connective tissue that forms the structural elements of the skeleton, providing support, protection, and aiding in movement.
Erythropoietin
A hormone produced by the kidneys that stimulates the production of red blood cells in response to low levels of oxygen in the bloodstream.
Red Blood Cell
A type of blood cell responsible for carrying oxygen from the lungs to the rest of the body.
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