Co-Evolution is the joint change of two or more species in close interaction. Predators and their prey sometimes coevolve; parasites and their hosts often coevolve; plant-eating animals and the plants upon which they feed also coevolve. One example of coevolution is between plants and the animals that pollinate them.
article "EmergEnce on the Web: CyberSpace and the Science of Complexity" - However, coevolution is not limited to the biological realm. As the emergent property of genes and their selective environment is Evolution, the continual morphogenesis of bodies, the emergent property of data and their selective environment is information, the continual morphogenesis of ideas.