When you inhale, you get a greater amount of oxygen and when you exhale, your oxygen dicreases 25%
The density of air decreases with altitude, so the ratio of oxygen in the air stays the same, but the amount of gases in your lungs decrease.
Deforestation reduces the gross amount of oxygen produced by an ecosystem it reduces the amount of oxygen produced .
i don't completely under stand your question, but if you're asking why the amount of it in the air doesn't change, the answer is simple. we breathe in oxygen and let out carbon dioxide. while plants "breathe in" carbon dioxide and let out oxygen. oxygen is also made from chemical reactions from the ocean. but this is not enough to supply this much life with oxygen, and we still don't know where all the extra oxygen came from.
carbon monoxide.
... The Amount of Oxygen in the room
When you inhale, you get a greater amount of oxygen and when you exhale, your oxygen dicreases 25%
it would change by the oxygen going low down
The amount of oxygen increased greatly
Yes, plants are the main source of oxygen.
Respiration (breathing) changes the amount of oxygen and carbon dioxide in the lungs
Humans need to bring food, water, oxygen,
The density of air decreases with altitude, so the ratio of oxygen in the air stays the same, but the amount of gases in your lungs decrease.
the amount of animals breathing in the oxygen, and not enough plants.
There is no set amount of light or of oxygen in fresh water.
Deforestation reduces the gross amount of oxygen produced by an ecosystem it reduces the amount of oxygen produced .
"What happens to the amount of oxygen carried by hemoglobin as temperature increases?" "What happens to the amount of oxygen carried by hemoglobin as temperature increases?" "What happens to the amount of oxygen carried by hemoglobin as temperature increases?"
i don't completely under stand your question, but if you're asking why the amount of it in the air doesn't change, the answer is simple. we breathe in oxygen and let out carbon dioxide. while plants "breathe in" carbon dioxide and let out oxygen. oxygen is also made from chemical reactions from the ocean. but this is not enough to supply this much life with oxygen, and we still don't know where all the extra oxygen came from.