The unity of all life, is a theme that runs through the myths of the creation of the Native North American world. Native American peoples believe that the Earth is female. She gives birth to all the animals, birds, insects, human beings and plants, and continues to offer them healing from her abundant store. Her life force is imbued equally in minerals, plants, and animals, including humankind. Different species are interlinked, so that a plant for example can offer a human healing, but in return the human must care for the plant.Healing in this tradition involves maintaining and if necessary restoring the natural balance in the land and people, a harmony that operates on the spiritual as well as on the mental and physical planes. Medicine in the Native North American world means power or energy.