Answer:
Earth's landmass is the part of earth total area that is covered by land and solid mass; it occupies about 21% of earths total surface area.
Earth's landmass consists of the soils, continents, rocks, vegetations, and every other landforms and structures present on the earths surface.
Geographically we can say that the Earth's landmass is the areas ocupied by the crust, the lithosphere and the solid part of the biosphere.