Sexual coercion often leads to an intersexual coevolutionary arms race. Wolpert and Macready have proved that there are free lunches in coevolutionary optimization. The Parisian approach shares many similarities with the cooperative coevolutionary algorithm. Finally, the results from this coevolutionary analysis are validated experimentally. The loss of species through coextinction represents the loss of irreplaceable evolutionary and coevolutionary history. Evolutionary game models have been created for pairwise and multi-species coevolutionary systems. The difference between cooperative coevolutionary algorithm and Parisian evolution resides in the population's semantics. It incorporates the existing cooperative coevolutionary algorithm (CC). A number of evolutionary game theory models have been produced to encompass coevolutionary situations. Coevolutionary measurements are further evaluated to assess their performance and stringency. Coevolutionary response to enrichment of exploitation ecosystems. A third, coevolutionary, dynamic combines intra-specific and inter-specific competition. Coevolutionary analysis is also known as correlated mutation, covariation, or co-substitution.