the earth is made up of four spheres
now let this song fall upon your ears
three physical realms of which i speak
truly make this earth unique
the fourth is not to be forgot
it's you and i that's quite a lot
the hydrosphere is a mass of water
in oceans and in clouds if hotter
71% of the surface it does cover
but the biosphere it does not smother
the biosphere includes all life on earth
plants and animals of every worth
the earth is surrounded by a gassy shell
this atmosphere does treat us well
the atmosphere is relatively thin
from heat it protects us and our kin
the solid earth is the final sphere
under the oceans is the geosphere
from earth's surface to its center it extends
in mass competitions it always wins
soil transcends sphere's limits
to no sphere does soil commit
these spheres make up a dynamic body
they interact they like to party
separately they have no soul
together they are a whole
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