The living ones form only a thin layer on the surface.
Press the mixture down into the base of the tin to form an even layer.
Add the potatoes and press with the back of a spatula to form an even layer.
Particles build up on the collection plates and form a layer.
The seven planes together form a single layer of montmorillonite.
Spread the medicine evenly to form a 1/8-inch thick layer.
Rock can form layers in a variety of ways.
In the winter, the river never completely freezes although it does form a heavy layer of ice.
The birch bark itself does not form the top layer of the roof.
In that situation it will form a layer over the water layer.