earth system

• the earth subsystems

  • biosphere
  • hydrosphere
  • geosphere
  • atmosphere
• atmosphere- is a collective layer of gas that envelopes the earth.

  • blanket or layers of breathable air
  • nitrogen 78%, oxygen 20%, other gas 1%
• hydrosphere- includes all water on the earth.

  • consisting of freely flowing bodies of water found on the surface of the Earth.
  • helps regulate the earth's temperature and climate.
• oceans 97%, fresh water 3%, frozen 70%, underground 29%, lakes and rivers 1%
• water- about 75% of earth

  land- about 25% of the earth
• biosphere- is a part of the Earth where all organisms (plants and animals) live.
• geosphere- is the largest out of all the spheres, extending from the surface of the Earth down to its center.

  -made up of 3 layers *crust *mantle *core