The biosphere is made up of the parts of Earth where life exists. The biosphere extends from the deepest root systems of treeto the dark environment of ocean trenches, to lush rain forests and high mountaintops.
There are five layers within the atmosphere. The troposphere, the stratosphere, mesosphere, ionosphere and exosphere are the layers of the atmosphere.
Our atmosphere is comprised of approximately 21% oxygen.
A hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet's hydrosphere can be liquid, vapor, or ice.
The global ocean, along with seas and bays, accounts for 97% of all the water on Earth, about 321 million cubic miles
The geosphere is considered that portion of the Earth system that includes the Earth's interior, rocks and minerals, landforms and the processes that shape the Earth's surface.
The Earth's interior includes a thin, 5- to 70 km-thick layer of oceanic and continental crust overlying an additional 6,300 km of rock and metals