The document discusses seed structure and dispersal. It explains that seeds have a seed coat, embryo, and cotyledon. Seeds can be dispersed in several ways including by wind, water, explosively, or with animal assistance through being eaten or carried. Common examples provided include dandelion seeds dispersing by wind, burrs sticking to animal fur to be carried, coconuts floating in water, acorns being eaten and dispersed by animals, milkweed seeds having fluffy ends to catch the wind, and bird droppings containing seeds that were eaten and dispersed.