0
What is the total percentage of carbon dioxide breathed out by humans each year?
Wiki User
∙ 13y ago
It would depend on the person's size and how active they are. Find the CO2 rates for an hour during sleep and being awake, multiply them by whatever you need and you'll figure out an annual estimate. However, a rough estimate (curtesy of "The Earth Blog") assuming 12 breaths per minute (resting breath rate) is 500kg
The number is easy to estimate: breaths per minute x CO2 per breath x minutes per year
From Wiki - the breath rate is 12 to 25 per minute. Size of breath is 500 mL. Percent CO2 exhaled is 4% so CO2 per breath is approx 0.04g ( 2g/L x .04 x .5l).
CO2 Per year= 12 x 0.04 x 525600 (minutes per year) = 252kg/yr
CO2 (25 breaths) = 525 Kg/yr.
So - pick a number between 252 Kg/yr and 525Kg/yr
1000 lbs/year is a good figure of merit.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoCarbon dioxide breathed out by humans is part of the carbon cycle. It comes from plants which extracted it from the atmosphere a few weeks ago. When we breathe it out it goes back into the atmosphere till plants and trees absorb it again.
Carbon dioxide from the burning of fossil fuels is carbon that was laid down under the ground millions of years ago. When we burn it all the extra CO2 goes into the atmosphere. This is the serious problem. Our breath is not.
See a link below for the Carbon Cycle.
Add your answer:
Earn +20 pts
Do humans inhale carbon dioxide?
Humans breathe in whatever happens to be in the air when they breathe in. If there is carbon dioxide then they will breathe it in as well as nitrogen and oxygen. However they only use the oxygen for respiration so they breathe out everything else with extra carbon dioxide.
What do you use carbon dioxide?
Well I use carbon dioxide in my fire extinguisher. What do you use carbon dioxide, or to put it another way? In what do you use carbon dioxide? Humans breathe out carbon dioxide... Breathing it out is not exactly using it. That would be more like making it.
What gasses are you emitting?
Humans emit carbon dioxide by breathing. They also emit carbon dioxide by belching and they emit methane by farting.
Humans have greatly increased the level of in the atmosphere?
carbon dioxide
Humans have greatly increased the level of in the atmosphere.?
carbon dioxide
What is called the flow air into the lungs and out the lungs?
Oxygen is breathed in and carbon dioxide is breathed out as it is deadly to humans. Too much carbon dioxide breathed in will cause brain damage and eventually death.
Do humans inhale carbon dioxide?
Humans breathe in whatever happens to be in the air when they breathe in. If there is carbon dioxide then they will breathe it in as well as nitrogen and oxygen. However they only use the oxygen for respiration so they breathe out everything else with extra carbon dioxide.
Percentage of gases breathed out by humans?
The air we inhale is roughly 78% by volume nitrogen, 20% oxygen, 1% argon and 0.04% carbon dioxide, helium, water vapour, and small amounts of other gases.
How do trees act as carbon sinks?
Trees absorb carbon dioxide and release oxygen - almost as if they breathed in the opposite way to humans.
What do humans exhale?
Human beings exhale carbon dioxide (CO2). We inhale a mixture that includes oxygen (O). It is the exact opposite process of that of plant life. This is why trees, forests and jungles are so important to the survival of all mammals (people and most animals).
How do mammoths breathe?
Mammoths are now extinct, but they were mammals just like we humans (unless you're not a human). They breathed in oxygen through their lungs and give out carbon dioxide.
Does carbon dioxide affect humans?
We exhale carbon dioxide or called CO2
How does carbon dioxide affects humans?
We exhale carbon dioxide or called CO2
What produes carbon dioxide?
Humans and animals produce carbon dioxide (CO2). They breath in oxygen, and in the mitochondria of cells, it creates carbon dioxide.
Is carbon dioxide good for humans?
Carbon dioxide is a very useful and largely used chemical; carbon dioxide is not toxic but also doesn't maintain the life.
Which gas do humans exhale?
Carbon dioxide
Which gas do humans breathe out?
carbon dioxide
