What is 2 Kg when dry 1 Kg when wet and 3 Kg when burnt?

The riddle describes the weight of a specific object under different conditions. The answer is "wood." When dry, wood typically weighs around 2 kg, when it absorbs moisture and becomes wet, its weight can increase to 1 kg (though this seems reversed, it may refer to a specific context). When wood is burned, it loses mass, and the remaining ash or residue can weigh around 3 kg, depending on the type and amount of wood.