Science, asked by rupeshkumarpatel2090, 8 months ago

Which of the following is used for taking breath by human?
1.Nitrogen
2.Helium
3.oxygen
4.Any Gas (air)

Answers

Answered by siri10132

Answer:

3. Oxygen

Explanation:

Humans inhale oxygen and exhale carbon dioxide.

Answered by pranavkumbhar6866

Answer:

100% oxygen

Explanation:

Pure oxygen can be deadly. Our blood has evolved to capture the oxygen we breathe in and bind it safely to the transport molecule called haemoglobin. If you breathe air with a much higher than normal O2 concentration, the oxygen in the lungs overwhelms the blood's ability to carry it away.

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