The mass of the Earth provides insufficient gravitational attraction to prevent these very light gases from escaping into space.
water, hydrogen cyanide,hydrogen sulfide, nitrogen, carbon dioxide, and carbon monoxide
Earth's first atmosphere contained hydrogen and helium but this was soon stripped away. Another atmosphere began to form and contained hydrogen, water vapour, methane, ammonia, nitrogen and carbon dioxide among other gases.
Oxygen. Earth's early(first) atmosphere is believed to contain hydrogen cyanide, carbon dioxide, carbon monoxide, nitrogen, hydrogen sulfide, and water. but still it only had little to no oxygen.
photosynthesis
The first atmosphere of the earth was probably mostly hydrogen with some simple hydrides such as water vapor, methane and ammonia. Vulcanism and asteroidal bombardment eventually replaced this with an atmosphere of mostly nitrogen, with carbon dioxide and some of the inert gasses.
Hydrogen and helium
water, hydrogen cyanide,hydrogen sulfide, nitrogen, carbon dioxide, and carbon monoxide
Mainly hydrogen and helium - which were also the main elements in the early Universe.
Earth's first atmosphere contained hydrogen and helium but this was soon stripped away. Another atmosphere began to form and contained hydrogen, water vapour, methane, ammonia, nitrogen and carbon dioxide among other gases.
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
Earth's first atmosphere contained hydrogen and helium but this was soon stripped away. Another atmosphere began to form and contained hydrogen, water vapour, methane, ammonia, nitrogen and carbon dioxide among other gases.
Oxygen. Earth's early(first) atmosphere is believed to contain hydrogen cyanide, carbon dioxide, carbon monoxide, nitrogen, hydrogen sulfide, and water. but still it only had little to no oxygen.
yes
oxygen
oxygen