when you breathe out,the gas that is emitted is
we breathe out a gas called carbon dioxide
Oxygen. You breathe out CO2
gas
We breathe in oxygen and we breathe out carbon dioxide
Oxygen
a tiger breathe in oxygen and breathe out carbon dioxide
the gas mask is important because if you are somewhere when you cant breathe they will help you breathe
Oxygen is the gas we breathe. It is colorless, odorless, and tasteless. It is essential to humans' survival.
The colorless, odorless and tasteless gas that you breathe in is called oxygen, the chemical symbol of which is O2. Similarly, the gas that you breathe out is called carbon dioxide.
Plants breathe in a gas called carbon dioxide and then they breathe out the gas called oxygen which is what we breathe in! Also there is most likely a type of living thing which no human has ever discovered and so there may be milllions of kind of living things that may not breathe in oxygen - they might not even breathe in a gas!
The same one you breathe in the most, Nitrogen.