What are the contributions of Whittaker Margulis and Schwarts in taxanomy?

Whittaker, Margulis, and Schwartz made significant contributions to the field of taxonomy, especially in the classification of life forms. Whittaker introduced a five-kingdom system in 1969, categorizing organisms into Monera, Protista, Fungi, Plantae, and Animalia, which helped clarify the relationships between different life forms. Margulis is known for her work on symbiotic theory, emphasizing the role of symbiOSis in evolution, which influenced how organisms are classified and understood. Schwartz contributed to the understanding of evolutionary relationships and the importance of molecular data in modern taxonomy, promoting a more nuanced view of organism classification.