How do the cardiovascular, respiratory, and excretory body systems work together while running? (Please I really need help :(

Ecological footprint is determined by measuring carbon dioxide emissions for a given region.

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Well,what i learned was that unlike many other  endothermic  reactions,  photosynthesis  does not absorb energy as heat. instead, during plants absorb energy from sunlight to turn carbon dioxide and water into oxygen and glucose, which is a type of sugar molecule. the energy is stored in the glucose molecules, ready to be used when needed.