LITHOSPHERE
Sphere of rock
SIAL- Rich in silica
and aluminium.
Below SIAL is SIMA-
Rich in silica and
magnesium.
HYDROSPHERE
Sphere of water
ATMOSPHERE
Sphere of air
Mixture of gases
BIOSPHERE
Sphere of life
Physical Environment
All non-living things
are physical environment.
For eg.- land, water and air
Biological Environment
It includes all living things.
For eg.- Plants and animals