You breathe in more oxygen than you breathe out. and you breathe out more carbon dioxide than you breathe in.
what type of change is oxygen turning into carbon dioxide?
a. physical only
b. chemical only
c. physical and chemical

B. chemical only.

Explanation:

In the process of respiration which is a chemical process where organic compound is released. In this process exergonic reaction takes place in which compound changes into different ones.

Following are the two types of respiration:-

1] Aerobic respiration:- In this type of respiration requirement of oxygen is more and energy released is more.

2] Anaerobic respiration:- In this type of respiration oxygen requirement is less and energy released is also less.

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