The two most abundant gases on Earth are nitrogen and oxygen.
Two gases that probably existed in Earth's early atmosphere are ammonia and methane. These gases were likely present in significant quantities before the atmosphere transformed into its current composition.
The most abundant gases in Earth's atmosphere today are nitrogen (about 78%) and oxygen (about 21%). These two gases make up the majority of our atmosphere, with other gases like argon, carbon dioxide, and water vapor present in smaller amounts.
The two main components of Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%). Together, they make up the majority of the gases present in the atmosphere.
The two deadly gases present in Earth's atmosphere four billion years ago were methane and ammonia. These gases were toxic to early organisms and would have made the atmosphere hostile to life as we know it today.
The two gases that probably dominated Earth's atmosphere during the Precambrian era were carbon dioxide (CO2) and nitrogen (N2). These gases were likely present in much higher concentrations than oxygen.
Two gases that probably existed in Earth's early atmosphere are ammonia and methane. These gases were likely present in significant quantities before the atmosphere transformed into its current composition.
The most abundant gases in Earth's atmosphere today are nitrogen (about 78%) and oxygen (about 21%). These two gases make up the majority of our atmosphere, with other gases like argon, carbon dioxide, and water vapor present in smaller amounts.
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The two main components of Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%). Together, they make up the majority of the gases present in the atmosphere.
The two deadly gases present in Earth's atmosphere four billion years ago were methane and ammonia. These gases were toxic to early organisms and would have made the atmosphere hostile to life as we know it today.
The two gases that probably dominated Earth's atmosphere during the Precambrian era were carbon dioxide (CO2) and nitrogen (N2). These gases were likely present in much higher concentrations than oxygen.
The main gases in Earth's atmosphere are nitrogen, followed by oxygen.
The main gases present in Earth's atmosphere today are nitrogen (about 78%), oxygen (about 21%), argon (about 0.93%), and carbon dioxide (about 0.04%). Other gases such as water vapor, methane, and trace amounts of other gases are also present.
The two most abundant gases in the Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%).
Hydrogen & carbon dioxide.
The two most common gases in Earth's atmosphere are nitrogen (N) and oxygen (O2). Nitrogen is roughly 78% and oxygen is roughly 21%.
The two primary gases in the Earth's atmosphere are nitrogen and oxygen.