Let's look back at the picture in the book when it was talking about the meals people eat. This meal was made of a peanut butter and jelly sandwich, an apple, and a glass of milk. Cows eat grass. Cows make milk and we drink milk. Grape jelly come from grapes, grapes come from plants.
Bread is made from flour and other ingredients.
Flour is made from wheat. This is a picture of a stock of wheat. The apple comes from the apple tree. Because she eats all of them. Top or end.