No, there is plenty of it available right now.
In the desert no rain no water.
they are different isotopes of oxygen, oxygen-17 has one more neutron than oxygen-16 making it slightly heavier. Oxygen-17 will react slightly slower than oxygen-16 since it has more mass.
Obviousaly it depends on what part of the planet you are on but in Australia iron ore is plentiful.
ratio between oxygen usage to oxygen uptake is called as Oxygen extraction ratio
4
lactic acid
It makes oxygen scarce just as it does to water. The humidity becomes higher.
I can give you several sentences.Money is scarce in my house.We need to conserve scarce resources.Make yourself scarce!
Scarce is an adjective.
no coal isnt scarce
Chlorine is not scarce
If by "air," you mean oxygen, then no. Venus's atmosphere is made up mostly of carbon dioxide and nitrogen. Other chemical compounds are scarce.
All resources are scarce.
All resources are scarce.
Proactive scarce removing.
Because it is important
Scarce Swallowtail was created in 1758.