Ecosystems are environments where biotic (living) organisms and abiotic (non-living) components interact together to create a functional, complex network of nutrient and energy cycling. These balanced environments take time, sometimes many years, to develop. During the course of development, species are replaced by other species within the ecosystem, a process known as succession. Primary succession happens when species grow in locations where organisms have never previously existed. Secondary succession occurs after an ecosystem disturbance. The …showed first 75 words of 918 total…

…showed last 75 words of 918 total…secondary succession changes, environmental scientists can learn how to help and not harm Earth's precious ecosystems. References: Bearman's Yellowstone Outdoor Adventures, (n.d.). The great fires of 1988. Retrieved <Tab/>June 24, 2005, from Yellowstone National Parks Year of Fire web site: <Tab/>http://www.yellowstone-bearman.com/yfire.html Berg, L. & Raven, P. (2004). Environment (4th edition). Hoboken, NJ: John Wiley & Sons. <Tab/>