What does the system of classifying things based first into broad categories, then into progressively more specific categories, describe? phonics taxonomy phylogeny statistics

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis

Fredrick griffith made a scientific discovery in 1928

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?