major domains of the earth

The major domains of the earth are lithosphere, hydrosphere, atmosphere and biosphere.
Lithosphere is the solid portion of the earth. The large landmasses are known as continents, and huge water bodies are known as ocean basins.
Continents:
1. Asia is the largest continent. It covers 1/3 of the earth’s surface. It lies in the eastern hemisphere. Tropic of cancer passes through this continent. The combined landmass of Europe and Asia is called, Eurasia.
2. Europe is smaller than Asia. It is at the west of Asia. Arctic Circle passes through this continent. It is bound by water on three sides.