Oxygen is necessary for most organisms to carry out their life functions.
Thermosphere
Inside what? Oxygen is part of the atmosphere. The thermal velocity of its molecules are insufficient to escape earth's gravity (unlike hydrogen molecules which are fast enough).
The term Geosphere is actualy earths densest part,consists mostly of rocks.
Tectonic Plates.
When oxygen is part of a compound or a mineral, it is chemically bound in that position. But it is otherwise chemically identical to the oxygen in the air.
oxygen
Obtained by Earths atmosphere which is 20% Oxygen and processed by the aveoli (part of the lung).
No. It is part of the hydrosphere.
I'd say the most important gasses in the Earth's atmosphere are oxygen and water vapour.
Oxygen became part of Earth's atmosphere mainly as a result of the evolution of life forms, particularly through photosynthesis by early cyanobacteria and plants. This process involved converting carbon dioxide into oxygen as a byproduct, leading to the oxygen-rich atmosphere we have today.
Earth's atmosphere is mainly nitrogen, oxygen, carbon dioxide, and water vapor. Oxygen is the most reactive of these. Oxygen allows all of the life as we know it on earth. Even though oxygen is less than 1/4 of the atmosphere it is the most important part.
nitrogen
ozone
Upper Part
the entire atmosphere...
Yes. Hydrogen is part - albeit a very small part - of the Earth's atmosphere. Typically it makes up about 0.000055% of the atmosphere
Oxygen.