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What two elements make up the majority of earths atmosphere?
Molecular oxygen is a bit over a fifth of the Earth's atmosphere, and molecular nitrogen is a bit under four-fifths of the Earth's atmosphere. There are also small amounts of oxygen and nitrogen in other atmospheric components such as carbon dioxide and ammonia.
What is the approximate percent of oxygen by volume present earths lower atmosphere?
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
How did molecular oxygen (O2) enter Earth's atmosphere?
Molecular oxygen (O2) entered Earth's atmosphere through the process of photosynthesis by early photosynthetic organisms, such as cyanobacteria, around 2.4 billion years ago. These organisms released oxygen as a byproduct of converting sunlight, water, and carbon dioxide into energy. Over time, the accumulation of oxygen in the atmosphere led to the development of the oxygen-rich atmosphere we have today.
WHAT IS THEAPPROXIMANT PERCENT OF OXYGEN BY VOLUME PRESENT IN EARTHS LOWER ATMOSPHERE?
The approximate percentage of oxygen in Earth's lower atmosphere is around 21% by volume.
What is the approximate percent of oxygen by volume present in earths lower atmosphere?
The approximate percent of oxygen in Earth's lower atmosphere is around 20.95% by volume.
What makes molecular oxygen in our atmosphere?
Cyanobacteria make molecular oxygen in our atmosphere.
How much of the earths atmosphere is made up of nitrogen and oxygen?
The earths atmosphere is made up of 78% nitrogen and 21% oxygen
What two elements make up the majority of earths atmosphere?
Molecular oxygen is a bit over a fifth of the Earth's atmosphere, and molecular nitrogen is a bit under four-fifths of the Earth's atmosphere. There are also small amounts of oxygen and nitrogen in other atmospheric components such as carbon dioxide and ammonia.
What percent of earths atmosphere is oxygen?
97%
Is most of the earths atmosphere covered with oxygen?
no
The primative earths atmosphere did not contain?
Free oxygen
The primitave earths atmosphere did not contain?
Oxygen gas
What is the major source of oxygen for the earths atmosphere is?
Plants
What gas was not part of early earths atmosphere?
oxygen
Is molecular oxygen a gas?
yes, it forms about 21% of our atmosphere.
What describes the earths atmosphere?
mostly nitrogen with 21% oxygen
Was the earths early atmosphere made up of mostly oxygen?
no
