The oxygen molecules just get transferred to a different substance. The molecules are all still there, just in a different form. Its called the The Law on the Conservation of Matter -- matter cannot be either created or destroyed. Humans take in O2 and produce CO2, whereas plants take in CO2 and produce O2. This is why in areas where forests have been logged, there is an increase in the amount of CO2, a Greenhouse gas. There isn't necessarily less oxygen, as 20% of the atmosphere is oxygen. In conclusion; nature always balances. Its a natural equilibrium.
They do not.
In the last 30 years the conzentration auf carbon dioxide is rising and rising.
how bad for mankind....
plants provide oxygen replenishing the supply
No they absorb large amounts of oxygen into the blood.
There is only one gas. It is the CO2 gas.
photosynthesis :)
Mostly nitrogen, oxygen, and carbon dioxide.
Nitrogen, oxygen carbon-dioxide, trace amounts of helium and other compounds.
By containing and capturing huge amounts of carbon dioxide
blood vessels
when carbon oxidizes (mixes with oxygen) it forms carbon dioxide
the concentration and of carbon dioxide and oxygen remains constant in the atmosphere because when human throw carbon dioxide out of their body so plants take it and when plants throw oxygen so human take it.
No they absorb large amounts of oxygen into the blood.
fairly constant
Carbon dioxide is the product; oxygen and carbon are the reactants.
No. Carbon dioxide is a chemical compound of carbon and oxygen.
When carbon reacts with oxygen to form carbon dioxide, carbon dioxide is the product of the reaction.
Yes, there are trace amounts of oxygen in Mars's atmosphere (less than 1%), and huge amounts of carbon dioxide and water ice that can both be processed into oxygen.
Oxygen-Carbon Dioxide Cycle- a continuous exchange of oxygen and carbon dioxide by plants and animals including human
During photosynthesis, carbon dioxide and oxygen are exchanged. The plant uses the carbon dioxide for the photosynthesis and expels oxygen.