<span>Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical nonmetals have a dull, colored or colorless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.</span>
That would be living things.
Because...
Biosphere= living things
Lithosphere= land
Hydrosphere= water
Atmosphere= air
