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.
What is the weight of a bushel of apples? The federal standard for the weight of a bushel of apples is 48 pounds. Depending on the average size of the apples in question, this correlates to a bushel containing anywhere from as few as 18 apples to over 100 apples.