carbon footprint

noun 0.769

water footprint

noun 0.725

footprint

noun 0.724

biocapacity

noun 0.611

ecology

noun 0.602

ecological service

noun 0.584

ecosystem

noun 0.567

ecologism

noun 0.546

footmark

noun 0.545

carbon offset

noun 0.528

ecotourism

noun 0.526

ecologist

noun 0.524

eco

noun 0.521

environmental

noun 0.521

environmental science

noun 0.514

footfall

noun 0.513

environmentalism

noun 0.507

ecotour

noun 0.506

ecofeminism

noun 0.505

square foot

noun 0.504

ecolabel

noun 0.504

footstep

noun 0.503