Final answer:
Linnaeus developed the classification system for living things that is still used today.
Step-by-step explanation:
The classification system for living things that is still used today was developed by Linnaeus. He introduced a system of hierarchical organization, known as taxonomy, which categorized organisms into different levels based on their similarities and differences. Linnaeus's system is still widely used in the field of biology to understand and classify the diversity of living organisms.
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