biosphere

noun 0.757

geosphere

noun 0.740

pedosphere

noun 0.726

noosphere

noun 0.655

anthroposphere

noun 0.643

ecosystem

noun 0.639

ergosphere

noun 0.635

ionosphere

noun 0.620

ecosophy

noun 0.616

lithosphere

noun 0.609

geospace

noun 0.607

rhizosphere

noun 0.604

mycorrhizosphere

noun 0.603

space environment

noun 0.592

horosphere

noun 0.585

photosphere

noun 0.580

hydrosphere

noun 0.578

earth science

noun 0.576

ecotope

noun 0.576

cryosphere

noun 0.574

ecology

noun 0.569

asphere

noun 0.568

troposphere

noun 0.551

semiosphere

noun 0.550

heliosphere

noun 0.550

earth

noun 0.550

lower atmosphere

noun 0.547

atmosphere

noun 0.545

spheroid

noun 0.545

geoscience

noun 0.543

social ecology

noun 0.542

nanosphere

noun 0.540

sphere

noun 0.537

ellipsoid

noun 0.536

exosystem

noun 0.531

exospore

noun 0.531

environmental science

noun 0.524

biocoenosis

noun 0.524

celestial sphere

noun 0.523

agroecosystem

noun 0.522

environment

noun 0.516

enviro

noun 0.515

electron shell

noun 0.515

eco

noun 0.511

spheroidal

noun 0.510

sphere of knowledge

noun 0.509

epidermis

noun 0.507

synecology

noun 0.507

ecologist

noun 0.507

ectoderm

noun 0.504

hypersphere

noun 0.503