Co-evolution is the process where two or more species influence each other's evolution over time. This interaction can occur in various forms, such as predator-prey relationships, mutualism, or competition. For example, flowers and pollinators like bees often evolve together, with flowers developing traits that attract bees, while bees adapt to efficiently gather nectar. In addition to species, co-evolution can also occur between organisms and their environments. For instance, parasites may evolve alongside their hosts, leading to changes in host defenses and parasite strategies. This dynamic interplay highlights the interconnectedness of life and the importance of relationships in shaping biodiversity.