New: simmetryAll contenthive-129948hive-196917krhive-150122zzansteemhive-180932hive-185836hive-188619hive-166405hive-183959hive-144064photographyhive-183397uncommonlabhive-145157hive-101145hive-184714hive-103599hive-165987lifehive-139765hive-139150hive-150943hive-109690TrendingNewHotLikersmatxxtia (42)in hive-142013 • 5 years agoTrees help us breathe — and not just by producing oxygen. Amazon rain forest About ...... half of all oxygen in the air comes from phytoplankton, but trees are a major source, too. Still, their relevance for humans' oxygen intake is a bit hazy. Various sources suggest a mature…
