Final answer:
Modern classification differs from Linnaeus's system by incorporating biochemical and genetic similarities and differences, and expanding the taxonomic hierarchy. Modern classification is considered better because it provides a more comprehensive and precise understanding of organisms.
Step-by-step explanation:
Modern classification differs from Linnaeus's system in several ways. While Linnaeus relied on obvious physical traits to classify organisms, modern classification considers biochemical and genetic similarities and differences as well. This means that organisms can be grouped based on their DNA, proteins, and other molecular features, providing a more accurate understanding of their evolutionary relationships.
In addition, modern classification has expanded the taxonomic hierarchy to include new levels such as domain, phylum, and subclass. These additional levels help to capture finer distinctions and provide a more detailed classification system.+
Overall, modern classification is considered better than Linnaeus's system because it incorporates more comprehensive information about organisms, allowing for a more precise and accurate classification.