It is important for us to understand the food supply chain.
The food supply chain represents the steps that your food goes through from it leaves the farm, until it reaches your fork.Source: From Farm to Fork
The food supply chain looks like this:
All your food begins its journey on a farm.This is known as the agricultural sector.
Food is then transported to a factory to go through primary and secondary processing. Food may then be stored here for some time before it is required in the retail sector.
From storage, food enters the distribution sector. This is where it is transported to the shops to be sold.
The retail sector is where food is sold to you, the consumer. The retail sector does not only include large supermarkets, but also small corner shops and local farmers' markets.
Your fork is the final step for the food that started off life on the farm.