A single layer of phospholipids forms what is called a micelle. The polar and hydrophilic phospho head groups would form the outermembrane which interacts with the aqueous environment. The nonpolar and hydrophobic lipid tails would be in the cytosol where they pack tightly and form stable interactions with the hydrophobic chains of the stored oil molecules.
The cells of plant seeds store oil as droplet and enclosed by membranes. The two membranes are cell membrane and oil droplet membrane and the two contain phospholipds with hydrophobic tail and hydrophilic head. The bilayer of the cell membrane has hydrophobic on the side and hydrophilic inside and this enable mobility of molecules in and out of the cell.
The single layer of phospholipids in the oil membrane can either have hydrophobic on a side and hydrophilic on another side, molecule don't move much in it. Oil is hyrophobic, the membrane has a single layer with hydrophobic tail in the oil and hydrophilic head inside and this will help the oil to form droplets.
Moraines are made of till. They form when a glacier stays in one place for a long time and deposits a pile of till, then it retreats and leaves a moraine.
