arwilli6
arwilli6 arwilli6
  • 02-02-2021
  • Physics
contestada

During heavy exercise, muscle cells use oxygen more quickly than normal. Which system responds by carrying extra oxygen to these muscle cells?
a. digestive b. circulatory c. nervous
d. immune

Respuesta :

lisoo
lisoo lisoo
  • 02-02-2021

Answer:

The answer is B. Circulatory

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