Under certain physical and chemical conditions the river is constantly creating new soil from plants (see: Plitvice Lakes).

When the water trapped in the batch of sand cannot escape, it creates liquefied soil that can no longer support weight.

Depending on the type of soil being used, several additives may need adding to create good soil for cuttings.

Cajamarca has an equatorial climate so it is mild, dry and sunny, which creates very fertile soil.

The population is divided among seven tribes whose rivalries created fertile soil for the insurgency to take root.

These dykes created the ideal fertile soil that the Annapolis Valley is known for.

When water in the sand cannot escape, it creates liquefied soil that loses strength and cannot support weight.

The volcanoes stopped, and no new lava poured forth to create new soil to replace that which had sunk into the sea.

The materials left over after the rock breaks down combined with organic material creates soil.

They use plants to absorb and break down toxins, eventually creating clean soil and water.