the suit of astronaut
Oxygen is the gas humans and animals need to breathe in.
Oxygen we inhale oxygen and exhale carbon dioxide
Cows can't survive on gas alone. Neither can humans. Both cows and humans need food and water to survive, not just oxygen (which is a gas we breathe).
Oxygen is essential to humans. We breathe it in.
carbon dioxide
There is almost totally NO gas in space, so when you try to breathe, there is nothing there to flow into your lungs. ============================= Another contributor took issue with the first response, and in doing so, threw the whole question open again, saying: Actually that is not compleatly known so there could be some kind of gas in space!
Humans release carbon dioxide when they breathe out. This gas is a byproduct of the process of cellular respiration and is removed from the body through exhalation.
No, Carbon Dioxide is the gas that plants use in Photosynthesis to transform it into oxygen for us to breathe.
Humans inhale oxygen and exhale carbon dioxide.
Fish are like humans in the way that they need oxygen. Fish breathe in dissolved oxygen and pass out carbon dioxide.
No, you cannot breathe carbon dioxide. It is a waste gas that can be harmful to humans if inhaled in high concentrations.
They breathe in air and exhale CO2 just like humans do.