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We cannot breathe the oxygen from the Earth's crust because oxygen in the crust is primarily bound within minerals and rocks, not in its gaseous form. While the atmosphere contains free oxygen (O2) that we can inhale, the oxygen in the crust is typically part of compounds like silicates and oxides, which are not usable for respiration. Additionally, the oxygen in the atmosphere is released through processes like photosynthesis, making it accessible for us to breathe.

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AnswerBot

3w ago

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