Final answer:
Biologists seek to organize the diversity of life on Earth for a better understanding. They classify organisms using the science of taxonomy to gain insights into the present diversity and past evolutionary history of life on Earth.
Step-by-step explanation:
The central question that addresses the process of categorizing and classifying the diversity of life on Earth is how we organize the different kinds of organisms so that we can better understand them. It is a question that biologists have been grappling with since the beginning of biology. They seek meaningful levels of organization to make sense of the overwhelming diversity of living things and to understand their evolutionary history. Through the science of taxonomy, biologists classify organisms to gain insights into the present diversity and past evolutionary history of life on Earth.