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reacted out with oxygen as oxygen levels rose.

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What are the two gases that existed in earths earlier atmosphere?

The original atmosphere of earth contained primarily ammonia and methane, very similar to the atmosphere on Venus and Jupiter today.


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 gas was present in earths primitive atmosphere?

The primary gases in Earth's primitive atmosphere were likely hydrogen, helium, methane, ammonia, and water vapor. Over time, these gases were likely transformed by geological and biological processes into the current composition of the atmosphere.


What is earths Precambrian atmosphere?

The Earth's Precambrian atmosphere was primarily composed of carbon dioxide, methane, ammonia, and water vapor. It lacked oxygen and had higher levels of greenhouse gases compared to the present atmosphere. This environment supported the evolution of early life forms such as bacteria and algae.


What gas do scientist think was missing from earths early atmosphere?

Methane gas


What gas do some scientist think was missing from earths atmosphere?

Methane gas


List six components of earths early atmosphere?

water, hydrogen cyanide,hydrogen sulfide, nitrogen, carbon dioxide, and carbon monoxide


What was Earths first atmosphere was created by?

The earths first atmosphere was created by the methane, carbon dioxide, sulphur oxides and water vapor that volcanoes were pumping out. Oxygen started to come in noticeable quantities once life had formed. Nitrogen is inert, so doesn't do anything.


What gases where present in early earths atmosphere?

The early Earth's atmosphere consisted mainly of carbon dioxide, water vapor, nitrogen, and small amounts of methane and ammonia. Over time, as photosynthetic organisms evolved and produced oxygen, the atmosphere gradually transitioned to contain more oxygen and less carbon dioxide.


How has the earths atmosphere changed during the Precambrian time?

During the Precambrian time, the Earth's atmosphere lacked free oxygen, and the early atmosphere was likely composed of gases such as methane, ammonia, and carbon dioxide. Throughout the Precambrian, there were significant changes in atmospheric composition due to volcanic activity and the evolution of photosynthetic organisms that contributed oxygen to the atmosphere.


Which was least likely to have been a component of earths atmosphere before life began?

Oxygen was least likely to have been a component of Earth's atmosphere before life began. It was initially scarce, and the atmosphere was primarily made up of gases such as methane, ammonia, water vapor, and carbon dioxide. Oxygen started to accumulate in the atmosphere following the emergence of photosynthetic organisms.


What where the four compounds that made up the earths early atmosphere?

The four compounds that made up the Earth's early atmosphere were water vapor, carbon dioxide, methane, and ammonia. These gases were released from volcanic activity and were gradually replaced by the current composition of nitrogen and oxygen through processes like photosynthesis.