The organisms on Earth today have adapted within Earth’s limits and boundaries over long time periods and, in the process, they have operated in concert to create abundant and diverse biological communities. While competition and predation between species may exist on an individual level, from a systems perspective life allows other life to flourish. To illustrate this point, consider the following ecological story:
Grizzly bears create opportunities for other life
Grizzly bears, an iconic species in North America, play a vital ecological role. Berries are an important part of their diet, and grizzlies play a critical role as seed dispersers, since berry seeds pass through their digestive tracts intact. The manure surrounding the seeds both protects the seeds from drying out and serves as fertilizer, helping the seeds germinate and the new seedlings survive. As grizzlies forage, they dig up the soil, increasing species diversity and nitrogen availability.