0
Roughly 318 ppm (parts per million), or 0.0318% compared to 392 ppm currently (March 2011).
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the source of oxygen that is released by a photosynthesis during the light reactions?
The source of Oxygen is the Carbondioxide in the air.
How do you find nitrogen percentage in air?
The percentage of nitrogen in pure, dry ,standard air is 78,084 % (by volume).
What is the percentage of carbondioxide in the atmosphere?
The level of carbon dioxide in air from remote locations is 0.0385% by number of molecules 0.0578% by mass City air or indoor air typically has significantly higher carbon dioxide levels. This has increased from about 0.031% by molecule (0.046% by mass) in the last century, and a pattern for the previous 400,000 years between 0.020% (0.030%) in the ice ages and 0.028% (0.042%) in the warmer interglacial periods.
What percentage of oxygen is in inspired air?
About 21% of inspired air is oxygen.
What percentage of hydrogen is lighter than air?
100% of hydrogen is lighter than air
Which air makes the lime water milky?
Carbondioxide
What is the source of oxygen that is released by a photosynthesis during the light reactions?
The source of Oxygen is the Carbondioxide in the air.
Are a fish nostrils used for breathing?
To smell the water and better protect themselves
Why the pH of groundwater slightly decrease upon exposure to air?
when the groundwater is exposed to the air the carbondioxide present in the air gets dissolved in the water due to which the ph of groundwater decreases
Why does the volume of air in the spirometer drop slowly over the first minute?
The drop in volume over the first minute of spirometry is typically due to airway resistance initially breaking up mucus or opening up collapsed airways, leading to more air being exhaled. This causes a gradual decrease in volume until a stable breathing pattern is established.
Does photosynthesis occur in the leaves of golden pothus house plants?
Photosynthesis occurs in the leaves of all plants during sunlight exposure releasing oxygen into the air and using carbondioxide in the air to make it...
Is air an amalgam?
No, it isn't. Both are homogeneous mixtures, but .... :Air is a mixture of gases, mainly of nitrogen, oxygen, carbondioxide and water vapor.Amalgam is (homogeneous) mixture of metals, of which essentially one is mercury (Hg)
What do the lung produces?
Carbondioxide
Who discovered carbondioxide?
j.black
What is the waste that you exhale?
carbondioxide
What do we breathe out?
we breath carbondioxide
What living organism uses the air humans breathe out?
plants. when humans exhale carbondioxide, plants take it in and turn it back into oxygen. especially trees
