You could tell them that the food chain is basically something that shows the feeding relationship between different living things. The food chain represents a series of food and energy are transferred from one organism in an ecosystem to another.<span />
Some of the areas of Europe which were excluded from the Reformation were Scandinavia (Norway, Sweden, Denmark), Ireland, France, Italy, some nations near the Baltic Sea as well.
Obviously, the Reformation had the greatest impact in England, where most of the citizens became followers of a new religion - Protestantism.