The local environments may change suddenly because of human or non-human events. For example, there are fires in the West every Spring, some started by people, some by lightning. What happens to these burned areas? The Spring may also bring heavy floods to the Midwest, what happens to the land after the floods recede?
Pick an area that was cleared by a natural or human activity such as volcanic eruption. Describe the steps of succession that occurred in the area you chose. Include the species or types of species that were the earliest invaders and explain the characteristics that allowed these to invade first. When and how did each trophic level arrive?