21.   In addition to the asphalt coating, the shingles also have a layer of ceramic and hard mineral granules.

22.   In addition to Tom Seaver, Jerry Koosman and Gary Gentry, they had layers of pitchers underneath their upper crust.

23.   In fact, the disappearance of Meggett is a problem that has many layers and one the Giants are scrambling to solve.

24.   In many cases, the board has multiple layers because the traces are so complex that they must cross one another many times.

25.   Internet-working, as Cisco uses the term, has multiple layers of meaning.

26.   It has two layers of glass and a very cold draft at the bottom.

27.   It had many layers.

28.   Like a mille-feuille, Masterpiece has many layers, which is another reason the child sat still for so long.

29.   Like any good dish, a well-made salad has layers of flavor and texture.

30.   Like a tiered wedding cake, the Coach House has many layers.