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Volcanic eruptions
The free oxygen bubbled up from the oceans.
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.
78% of the atmosphere is Nitrogen, Oxygen is like 20% Then come the rare gases like Argon, Neon and helium but those are present only in traces.
Most of the pollutants in the ocean come from humans. This is because humans burn fossil fuels which release toxic gases into the atmosphere that then rain down in the ocean.
they come from earths atmosphere and gases
Scientist theorize that bacteria with chlorophyll in them slowly but surely began to multiply. And as they did, they photosynthesized enough to create an entire atmosphere. (as you know oxygen is a byproduct of photosynthesis)
Plants
Gases of the atmosphere were attracted by gravity from the space.
It is a meteorite (meteor).
Volcanic eruptions
The free oxygen bubbled up from the oceans.
Yes. Asteroids can enter earth's atmosphere. In such an event the asteroid will probably strike earth's surface.
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.
The gases dissolve into the lava
78% of the atmosphere is Nitrogen, Oxygen is like 20% Then come the rare gases like Argon, Neon and helium but those are present only in traces.
Farts are made out of the gases that come from when, you eat something it is made out of Methane gas that harms the atmosphere like beans.