Overview
Life on Earth is astonishingly complex. There are tens of millions of living species, or kinds of organisms. Some endangered species have just a few individual organisms, while others have quadrillions. Every individual organism is, all by itself, an extremely complicated object, with many interacting parts. Further, organisms interact with other organisms, of the same species and of other species, to form an inconceivably complex network of causes and effects.
Log in to comment