Oxyegen
No, rocks that are 3.5 billion years were not present when earth was first formed. Earth formed about 4.6 billion years ago.
Ozone gas is not formed in troposphere. It is because the factors that create ozone are not present there.
The Earth atmosphere is formed from gases.
Ozone layer has hole in it above Antartica continent. It is formed due to CFC gas. Beacuse of the hole there is an increase in the temperature of earth.
Oxygen is believed not to be present at the time of Earth's formation.
From what is listed here, the order is as follows. Gas rose into the sky. Clouds formed. Rain fell. Earth's surface began to cool. Rivers and lakes formed on Earth.
nitrogen!
earth gases are that naturaly formed on earth eg. oxygen and the one in are gas boilers that people pump out of the ground is methane.
at present the theory is that all of the planets that make up the solar system were formed at the same time when the Solar System condensed out of a cloud of gas about 4.5-4.7 billion years ago.
When Earth formed, it was initially composed of gases such as hydrogen, helium, methane, and ammonia. Over time, these gases gradually dissipated into space or were absorbed into the planet's interior. The gases released from the Earth's interior during volcanic activity contributed to the formation of the early atmosphere.
carbon dioxide
Natural gas is a fossil, a product formed by ancient life on earth.