ecosphere

noun 0.726

geosphere

noun 0.723

biosphere

noun 0.688

rhizosphere

noun 0.669

anthroposphere

noun 0.664

pedology

noun 0.662

lithosphere

noun 0.642

noosphere

noun 0.632

mycorrhizosphere

noun 0.627

photosphere

noun 0.617

horosphere

noun 0.600

cryosphere

noun 0.592

troposphere

noun 0.585

hydrosphere

noun 0.583

ionosphere

noun 0.583

particle horizon

noun 0.576

paleosol

noun 0.574

soil science

noun 0.572

soil physics

noun 0.571

soil

noun 0.568

geospace

noun 0.567

topsoil

noun 0.562

epipedon

noun 0.552

ergosphere

noun 0.542

spheroid

noun 0.529

asphere

noun 0.526

geoscience

noun 0.524

sphere

noun 0.522

soil scientist

noun 0.522

spheroidal

noun 0.519

semiosphere

noun 0.519

surface layer

noun 0.516

lower atmosphere

noun 0.516

planetology

noun 0.515

pedon

noun 0.515

pore space

noun 0.511

perispore

noun 0.509

saprolite

noun 0.509

planetary science

noun 0.509

earth science

noun 0.507

soil genesis

noun 0.505

subsoil

noun 0.504

geophagy

noun 0.503

surface boundary layer

noun 0.503

sphere of knowledge

noun 0.502

petrology

noun 0.501