Spheres

The 4 Spheres

Biosphere

Hydrosphere

Lithosphere

Atmosphere

The biosphere also known as the ecosphere, is the worldwide sum of all ecosystems. It can also be termed the zone of life on Earth, a closed system, and largely self-regulating.

The hydrosphere is the combined mass of water found on, under, and above the surface of a planet, minor planet or natural satellite.

Lithosphere is the rigid, outermost shell of a terrestrial-type planet, or natural satellite, that is defined by its rigid mechanical properties.

An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body.

1. How much of the earth is made up by hydrosphere? 70%
2. How much of the earth is made up by lithosphere / ground?30%
3. What is the atmosphere made up of?78%nitrogen/21% oxygen
4. What does the biosphere contain?The biosphere contains all aspects of life.