New: terrain-modelAll contenthive-129948hive-196917krsteemhive-180932hive-166405hive-183959hive-150122zzanhive-185836hive-183397hive-101145hive-144064photographyhive-188619uncommonlabhive-184714hive-145157bitcoinhive-103599hive-139150hive-138689hive-193186krsuccesshive-170554TrendingNewHotLikersdeputt (41)in chemicals • 2 years agoMore Or No ChemicalsIf a river is polluted by industrial wastes, do we; A. Pour in more chemicals to clear it up. B. Stop the source of the pollution. #terrain-model #terrain-theory