Key points are not available for this paper at this time.
Biodiversity is the number and variability of genes, species, and communities in space and time (Norse et al., 1986; Wilson, 1988; Heywood and Baste, 1995). The fundamental question that has governed its study in modern times is Hutchinson's (1959): “Why are there so many kinds of animals?” In more recent decades, a somber subquestion has been added: How many species are dying every year (e.g., Wilson, 1992)?
J. John Sepkoski (Tue,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: