In my humble opinion, I think it covers the WHOLE earth
The most abundant element in earth's first atmosphere is nitrogen. This is a gas which makes 78% of the earth's atmosphere.
Yes Earth's atmosphere comprises 78% Nitrogen.
Nitrogen is the least abundant element in the atmosphere of the Earth. The most abundant element in the atmosphere of the Earth is oxygen.
the earth's atmosphere keeps out most harmful rays of the sun and most radiation. Without it, we would die.
The mass of the atmosphere compresses the atmosphere and it is most compressed near the earth's surface where the entire height of the atmosphere is above it.
Greenhouse gases, particularly carbon dioxide, are part of the Earth's atmosphere; as such, they cover all of the Earth's surface. The whole world is covered by atmosphere.
Nitrogen is the most common gas in the earth's atmosphere.
Most of the earth's ozone is in the atmosphere. It is in the form of ozone layer.
The ozone is present inside the atmosphere. And yes, it covers the whole of the earth.
Oxygen
Titan is the only one of Saturn's moons that has an appreciable atmosphere. It is most like earth's atmosphere in its high concentration of nitrogen (98% compared to Earth's 78%).
They burn up in the atmosphere.