What we do know, though, is that planet Earth hosts so much life that as a result, life actually changes chemical properties of the planet, particularly its biosphere ​ — the part of the earth where life exists.
Kindel on aga see, et planeet Maal on nii palju elu, et siinsed organismid mõjutavad lausa planeedi keemilist koostist, eriti biosfääri koostist, kus eksisteerib elu.