Because it just does.
The atmosphere of Earth is held in place by gravity. Gravity pulls air molecules towards Earth's surface, creating atmospheric pressure that keeps the atmosphere from floating away into space.
the layer above the earth is the troposphere
A gas giant often has a thick atmosphere composed mainly of hydrogen and helium. These planets typically have no solid surface and may have many moons and planetary rings. They are much larger than terrestrial planets like Earth and are located farther from their host star.
The troposphere is closest to Earth's surface. It is the lowest layer of Earth's atmosphere, extending from the surface up to about 10-15 kilometers. The stratosphere is located above the troposphere.
The English term 'hydrosphere' means the watery layer of the earth's surface; the waters of the earth's surface as distinguished from those of the lithosphere and the atmosphere. Hydrosphere also means the water vapor in the earth's atmosphere.
The stratosphere is a layer of Earth's atmosphere located above the troposphere, extending from approximately 10 to 50 kilometers (6 to 31 miles) above Earth's surface.
Because it just does.
The atmosphere is denser near the Earth's surface because gravity pulls the air molecules towards the ground, compressing them and increasing their density. As you move higher in the atmosphere, there are fewer air molecules above you, leading to lower pressure and density.
It extends to 600-700 km above earth's surface
The atmosphere is above the surface of the Earth because gravity pulls it towards the planet. The atmosphere contains gases that are essential for life, such as oxygen and nitrogen, and it helps regulate the planet's temperature by trapping heat from the sun.
The stratosphere extends from about 10 to 50 kilometers (6 to 31 miles) above Earth's surface. This layer of the atmosphere contains the ozone layer, which absorbs and scatters ultraviolet radiation from the sun.
the layer above the earth is the troposphere
It decreases
troposphere
troposphere
troposphere
troposphere
The meteoroid would be considered in Earth's mesosphere layer when it is 75 km above the Earth's surface. This region is where most meteoroids disintegrate due to friction with the atmosphere.