high quality / rich / good soil has a high number of nutrients
good is quality. good_food is foundation_for_good_health. richness is value. high_plasticity_soil_region is fine_grained_soil_region. knowledge is good_nor_bad. topsoil is very_valuable_resource. common_good is good. high_plasticity_soil_region is not fine_grained_soil_region. water has high_heat_capacity diversity is good_thing.