No. There is not another planet inside Earth.
Assuming that the Earth's atmosphere is a perfect sphere, then the atmosphere's center of mass will be at the point equidistant between Earth's poles (i.e. the center of the Earth!).
Planet Earth - about 80%.
Gases in the Earth's atmosphere stay close to the surface due to the force of gravity acting on them. Gravity pulls the gases towards the center of the planet, keeping them from escaping into space. The mass of the Earth is sufficient to maintain an atmosphere that surrounds the planet.
No. No. The only planet n contact with Earth's atmosphere is Earth itself.
the center of the earth
Earth is the only known planet with an oxygenated atmosphere.
The earth is the largest planet in our atmosphere. Jupiter is the largest planet in out solar system.
A big ball of gas and helium. Not if your planet is the Earth. Earth has iron at its center.
We are adapted to breathing and living in Earth's atmosphere. A planet would need to have an atmosphere similar to that of Earth for people to find it livable.
Earth
It is none other than our own planet Earth, which has nitrogen and oxygen in its atmosphere.
The center of mass of Earth's atmosphere is located close to Earth's geometric center, but it can be slightly influenced by atmospheric circulation patterns and mass distribution. Overall, it is within the region of Earth's core, beneath the crust and atmosphere.