outer and thinnest layer composed of solid rocks
crust
composed of iron and nickel and is the inner core
Core
the mantel, core and crust belong to:
geosphere
thickest layer of hot, semi solid rock
mantle
mass of gases surrounding our planet including oxygen
Atmosphere
all the water on our planet : rivers, oceans, lakes
hydrosphere
solid part of the earth, rocks and minerals
geosphere
all living things on earth, including animals, plants and humans
Biosphere