The roots collect the water needed for the growth of the tree. The trunk supports the body of a tree. Branches hold animals, the Acsts of birds swings, and tree houses.The bark protects the trees from bad weather and insects. The crown is the top of a tree, it faces the sky to collect sunlight.The branches and leaves of the tree canopy are a good place to cool off as shade on a hot summer day.The tree breathes the air through the leaves. The sap provides the trees blood.The flowers of the tree attract insects and birds to help spread the pollen, making the tree produce seeds and grow fruits.