Breathe in, breathe out. Trees are a source of oxygen and of life. When you walk into a forest or even a park, being surrounded by trees gives a feeling of stepping foot into a fairytale perhaps you'll find seven dwarfs, or even a talking rabbit worried about time, Trees are nature's playground for squirrels, birds, bugs, and even us. Wind is music to their leaves swaying back and forth. Trees are full of adventure.