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The early Earth's atmosphere lacked oxygen because oxygen was not initially produced by photosynthetic organisms. Instead, the atmosphere consisted primarily of gases emitted from volcanic activity, such as water vapor, carbon dioxide, and nitrogen. Oxygen levels increased over time as photosynthetic bacteria and plants evolved.
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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.
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 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.
Did earths original atmosphere contain methane and ammonia?
Yes, Earth's original atmosphere is believed to have contained methane, ammonia, water vapor, and other gases. This atmosphere was formed from gases released during volcanic activity. Over time, the atmosphere changed due to the presence of early life forms that produced oxygen through photosynthesis.
What was earths original atmosphere made of?
Earth's original atmosphere was likely composed primarily of carbon dioxide and water vapor, along with smaller amounts of hydrogen, helium, and other gases. Over time, volcanic activity and the emergence of early life forms led to changes in the composition of the atmosphere, eventually leading to the development of the oxygen-rich atmosphere we have today.
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 percent of earths atmosphere is oxygen?
97%
Is most of the earths atmosphere covered with oxygen?
no
The primitave earths atmosphere did not contain?
Oxygen gas
The primative earths atmosphere did not contain?
Free oxygen
What is the major source of oxygen for the earths atmosphere is?
Plants
What gas was not part of early earths atmosphere?
oxygen
Which gases were parts of earths original atmosphere?
HIDROGEN
What are the primary gases found in earths atmosphere?
Nitrogen and oxygen,
Was the earths early atmosphere made up of mostly oxygen?
no
What describes the earths atmosphere?
mostly nitrogen with 21% oxygen
What was the major contributor of oxygen to earths early atmosphere?
photosynthsis
