What is the difference between evergreen and deciduous forests?

The clue to this one is in the name. A forest that is "evergreen" is one that remains, as the name suggests, green all year round. The trees in an evergreen forest will not lose their leaves in autumn, and as a result the forest will remain thick and a viable habitat for its animal inhabitants during the winter months. Trees typically found in an evergreen forest would include pine, cedar, holly, and so on. Evergreen forests will also be likely to contain evergreen shrubs and plants at ground level, meaning a thickly carpeted forest floor in midwinter.
By contrast, a deciduous forest will be largely made up of trees that lose their leaves completely in the winter months. Fruit-bearing trees will lose their fruit in the autumn, at the same time as the leaves of trees begin to fall off; likewise, flowers and other plants in deciduous forests will lose their petals. Deciduous forests are generally very bare in the wintertime.