endothermic, exothermic, pH scale, desalination, distillation, water comsumption, water conservation, abstraction, acidic, alkali, crust, mantle, inner core, outer core, element, compound, chlorination.

autors:

Līderu saraksts

Vizuālais stils

Iespējas

Pārslēgt veidni

Atjaunot automātiski saglabāto: ?