It slowly evaporates, leaving a thin crust of animal and vegetable matter.
As the water evaporates, it will keep the humidity high and constant near the plant.
As the water evaporates, it will add humidity near the plants.
From there, it evaporates quickly, so that your clothes aren't weighed down with moisture or sticking to your skin.
Being less volatile than nitrogen, argon accumulates relatively as liquid air evaporates.