A great example of a physical boundary is a mountain. For example, the Pyrenees Mountains, which serve to separate France and Spain, are a physical boundary. So are the Ural Mountains which separate Europe and Asia. Along with mountains, oceans, seas, even deserts are examples of physical boundaries.
An average size apple weighs 6.4 ounces, which is equal to 180  grams. One apple contains approximately 91 calories and 3 grams of  dietary fiber.
A bushel is roughly 42 to 48 pounds, equal to about 126 apples. While that is a large amount of apples, it boils down to approximately 18 quarts of canned apples, which keep on the shelf for an extended period of time. Sources: